Citation_Information:

Originator: San Francisco Estuary Institute

Publication_Date: 19990708

Title: Robert A. Leidy Fish Survey 1992-1998

Edition: 1.2

Geospatial_Data_Presentation_Form: database

Series_Information:

Series_Name: Bay Area Stream Fishes

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Richmond, CA

Publisher: San Francisco Estuary Institute

Online_Linkage:

http://sfei.org/ecoatlas/Animals/docs/Fish/basf.html

Larger_Work_Citation:

Citation_Information:

Originator: San Francisco Estuary Institute

Publication_Date: Unpublished Material

Publication_Time: Unknown

Title: EcoAtlas

Edition: 06221999

Geospatial_Data_Presentation_Form: Atlas

Publication_Information:

Publication_Place: Richmond, CA

Publisher: San Francisco Estuary Institute

Online_Linkage: www.sfei.org

Abstract:

This database contains information about native and introduced fishes collected by Robert A. Leidy of USEPA on Bay Area streams from April 1992 to July 1998. The database was designed and built by the San Francisco Estuary Institute, in collaboration with Region IX of the U.S. Environmental Protection Agency, during January to May 1999. The database reports on the numbers and lengths of a total of 37 species of fish observed at 263 stations on 79 Bay Area streams. The Leidy Fish Survey 1992-1998 documentation is currently available as a PDF file from the San Francisco Estuary Instituteís website (www.sfei.org). The PDF file includes information on survey and database methods and a section about data use. Please consult the documentation before using these data. This version (1.2) is the first release of data from the Bay Area Stream Fishes project. With the support of local groups, SFEI is developing an on-line map-based query system to make the Stream Fishes data easily accessible. It will go online in early 2000. Additional components, including historical data, are also being developed to extend the utility of the database. EPA, SFEI, and local partners will be exploring how these data can be well-used, and updated, to support ongoing watershed management.

Purpose:

To make EPA stream fish data available for watershed management in the San Francisco Bay Area.

Supplemental_Information: None

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 19990708

Currentness_Reference: Observed

Progress: In Work

Maintenance_and_Update_Frequency: As Needed

Description_of_Geographic_Extent:

Survey station locations in San Francisco Bay Region

Bounding_Coordinates:

West_Bounding_Coordinate: -122.661

East_Bounding_Coordinate: -121.458

North_Bounding_Coordinate: 38.629

South_Bounding_Coordinate: 37.104

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: Bay Area stream fishes

Theme_Keyword: fish

Theme_Keyword: San Francisco Bay species

Place:

Place_Keyword_Thesaurus: EcoAtlas Place Name

Place_Keyword: Adobe Creek (Sonoma County)

Place_Keyword: Alameda Creek

Place_Keyword: Alameda Creek Watershed

Place_Keyword: Alameda del Prado Creek Watershed

Place_Keyword: Arroyo Corte Madera del Presidio Creek

Place_Keyword: Arroyo Corte Madera del Presidio Creek Watershed

Place_Keyword: Arroyo de la Laguna Creek

Place_Keyword: Arroyo Hondo Creek

Place_Keyword: Arroyo Mocho Creek

Place_Keyword: Arroyo San Jose Creek

Place_Keyword: Arroyo Valle Creek

Place_Keyword: Bear Creek

Place_Keyword: Bonjetti Creek

Place_Keyword: Calabazas Creek

Place_Keyword: California

Place_Keyword: Carriger Creek

Place_Keyword: Cascade Creek

Place_Keyword: Cerrito Creek

Place_Keyword: Cerrito Creek Watershed

Place_Keyword: Conn Creek

Place_Keyword: Contra Costa

Place_Keyword: Cordelia Slough Watershed

Place_Keyword: Corte Madera Creek (Marin County)

Place_Keyword: Corte Madera Creek (Santa Clara County)

Place_Keyword: Cow Creek

Place_Keyword: Coyote Creek

Place_Keyword: Coyote Creek Watershed

Place_Keyword: Cyrus Canyon Creek

Place_Keyword: Donner Creek

Place_Keyword: Dry Creek

Place_Keyword: Fairfax Creek

Place_Keyword: Graham Creek

Place_Keyword: Grayson Creek

Place_Keyword: Green Valley Creek

Place_Keyword: Guadalupe River

Place_Keyword: Guadalupe River Watershed

Place_Keyword: Hoover Creek

Place_Keyword: Indian Creek (Alameda County)

Place_Keyword: Indian Creek (Contra Costa County)

Place_Keyword: Kelly Cabin Creek

Place_Keyword: Kimball Canyon Creek

Place_Keyword: La Costa Creek

Place_Keyword: Las Trampas Creek

Place_Keyword: Los Trancos Creek

Place_Keyword: Matadero Creek

Place_Keyword: Matadero Creek Watershed

Place_Keyword: Mill Creek

Place_Keyword: Miller Creek

Place_Keyword: Miller Creek Watershed

Place_Keyword: Mount Diablo Creek

Place_Keyword: Mount Diablo Creek Watershed

Place_Keyword: Napa

Place_Keyword: Napa River Area (Bayland Segment D)

Place_Keyword: Napa River Watershed

Place_Keyword: Napa Slough

Place_Keyword: Novato Creek

Place_Keyword: Novato Creek Watershed

Place_Keyword: Old Mill Creek

Place_Keyword: Palomares Creek

Place_Keyword: Permanente Creek

Place_Keyword: Permanente Creek Watershed

Place_Keyword: Petaluma River

Place_Keyword: Petaluma River Watershed

Place_Keyword: Pinole Creek

Place_Keyword: Pinole Creek Watershed

Place_Keyword: Redwood Creek (Alameda County)

Place_Keyword: Redwood Creek (Napa County)

Place_Keyword: Rodeo Creek

Place_Keyword: Rodeo Creek Watershed

Place_Keyword: Ross Creek

Place_Keyword: Sage Creek

Place_Keyword: San Anselmo Creek

Place_Keyword: San Antonio Creek

Place_Keyword: San Felipe Creek

Place_Keyword: San Francisco Bay Region

Place_Keyword: San Francisquito Creek

Place_Keyword: San Francisquito Creek Watershed

Place_Keyword: San Leandro Creek

Place_Keyword: San Leandro Creek Watershed

Place_Keyword: San Lorenzo Creek Watershed

Place_Keyword: San Mateo

Place_Keyword: San Mateo Creek Watershed

Place_Keyword: San Pablo Creek

Place_Keyword: San Pablo Creek Watershed

Place_Keyword: San Tomas Aquinas Creek Watershed

Place_Keyword: Santa Clara

Place_Keyword: Saratoga Creek

Place_Keyword: Saratoga Creek Watershed

Place_Keyword: Sarco Creek

Place_Keyword: Second Napa Slough

Place_Keyword: Smith Creek

Place_Keyword: Solano

Place_Keyword: Sonoma

Place_Keyword: Sonoma Creek

Place_Keyword: Stevens Creek Watershed

Place_Keyword: Stuart Canyon Creek

Place_Keyword: Suscol Creek

Place_Keyword: Tassajara Creek

Place_Keyword: Third Napa Slough

Place_Keyword: Unnamed Creek (South of Cordelia)

Place_Keyword: Unnamed Tributary to Alameda del Prado Drainage

Place_Keyword: Unnamed Tributary to Dry Creek

Place_Keyword: Unnamed Watershed (South of Cordelia)

Place_Keyword: Vallecitos Creek

Place_Keyword: Walnut Creek

Place_Keyword: Walnut Creek Watershed

Place_Keyword: Warner Canyon Creek

Place_Keyword: Wildcat Creek

Place_Keyword: Wildcat Creek Watershed

Temporal:

Temporal_Keyword_Thesaurus: None

Temporal_Keyword: 1992 to 1998

Temporal_Keyword: April 10, 1992 to July 23, 1998

Taxonomic_Keywords: Animals

Taxonomic_Keywords: Fishes

Taxonomic_Keywords: Vertebrates

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Gobiidae

Genus: Acanthogobius

Species: Acanthogobius flavimanus

Applicable_Common_Names: Yellowfin goby

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Ictaluridae

Genus: Ameiurus

Species: Ameiurus melas

Applicable_Common_Names: Black bullhead

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Carassius

Species: Carassius auratus

Applicable_Common_Names: Goldfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Catostomidae

Genus: Catostomus

Species: Catostomus occidentalis

Applicable_Common_Names: Sacramento sucker

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cottidae

Genus: Cottus

Species: Cottus asper

Applicable_Common_Names: Prickly sculpin

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cottidae

Genus: Cottus

Species: Cottus gulosus

Applicable_Common_Names: Riffle sculpin

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Cyprinus

Species: Cyprinus carpio

Applicable_Common_Names: Chameleon goby

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Poeciliidae

Genus: Gambusia

Species: Gambusia affinis

Applicable_Common_Names: Western mosquitofish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Gasterosteidae

Genus: Gasterosteus

Species: Gasterosteus aculeatus

Applicable_Common_Names: Threespine stickleback

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Gobiidae

Genus: Gillichthys

Species: Gillichthys mirabilis

Applicable_Common_Names: Longjaw mudsucker

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Embiotocidae

Genus: Hysterocarpus

Species: Hysterocarpus traskii

Applicable_Common_Names: Tule perch

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Petromyzontidae

Genus: Lampetra

Species: Lampetra tridentata

Applicable_Common_Names: Pacific lamprey

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Lavinia

Species: Lavinia exilcaudaXsymmetricus

Applicable_Common_Names: Hybrid Hitch-Roach

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Lavinia

Species: Lavinia exilicauda

Applicable_Common_Names: Hitch

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Lavinia

Species: Lavinia symmetricus

Applicable_Common_Names: California roach

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Lepomis

Species: Lepomis cyanellus

Applicable_Common_Names: Green sunfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Lepomis

Species: Lepomis gibbosus

Applicable_Common_Names: Pumpkinseed

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Lepomis

Species: Lepomis macrochirus

Applicable_Common_Names: Bluegill

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Lepomis

Species: Lepomis microlophus

Applicable_Common_Names: Redear sunfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Lepomis

Species: Lepomis spp.

Applicable_Common_Names: Unidentified sunfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cottidae

Genus: Leptocottus

Species: Leptocottus armatus

Applicable_Common_Names: Staghorn sculpin

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinodontidae

Genus: Lucania

Species: Lucania parva

Applicable_Common_Names: Rainwater killifish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Atherinidae

Genus: Menidia

Species: Menidia beryllina

Applicable_Common_Names: Inland silverside

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Micropterus

Species: Micropterus dolomieui

Applicable_Common_Names: Smallmouth bass

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Centrarchidae

Genus: Micropterus

Species: Micropterus salmoides

Applicable_Common_Names: Largemouth bass

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Percichthyidae

Genus: Morone

Species: Morone saxatilis

Applicable_Common_Names: Striped bass

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Mylopharodon

Species: Mylopharodon conocephalus

Applicable_Common_Names: Hardhead

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Notemigonus

Species: Notemigonus crysoleucas

Applicable_Common_Names: Golden shiner

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Salmonidae

Genus: Oncorhynchus

Species: Oncorhynchus mykiss

Applicable_Common_Names: Rainbow trout

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Salmonidae

Genus: Oncorhynchus

Species: Oncorhynchus tshawytscha

Applicable_Common_Names: Chinook salmon

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Orthodon

Species: Orthodon microlepidotus

Applicable_Common_Names: Sacramento blackfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Percidae

Genus: Percina

Species: Percina macrolepida

Applicable_Common_Names: Bigscale logperch

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Pimpephales

Species: Pimpephales promelas

Applicable_Common_Names: Fathead minnow

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Pleuronectidae

Genus: Platichthys

Species: Platichthys stellatus

Applicable_Common_Names: Starry flounder

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Pogonichthys

Species: Pogonichthys macrolepidotus

Applicable_Common_Names: Splittail

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Cyprinidae

Genus: Ptychocheilus

Species: Ptychocheilus grandis

Applicable_Common_Names: Sacramento squawfish

Taxonomic_Coverage:

Specific_Taxonomic_Information:

Family: Gobiidae

Genus: Tridentiger

Species: Tridentiger trigonocephalus

Applicable_Common_Names: Chameleon goby

Do not re-distribute data beyond recipient agency. Interested parties should request current version of data from the San Francisco Estuary Institute. Acknowledgement of the San Francisco Estuary Institute would be appreciated in products derived from this data.

Contact_Information:

Contact_Person_Primary:

Contact_Person: Robin Grossinger

Contact_Organization: San Francisco Estuary Institute

Contact_Position: Assistant Environmental Scientist

Contact_Address:

Address_Type: Mailing and Physical Address

Address: 2nd Floor

Address: 7770 Pardee Lane

City: Oakland

State_or_Province: CA

Postal_Code: 94621

Country: USA

Address: 7770 Pardee Lane

Contact_Voice_Telephone: 510-746-7334

Contact_Facsimile_Telephone: 510-231-9414

Contact_Electronic_Mail_Address: robin@sfei.org

Hours_of_Service: Monday through Friday, 10:00am to 6:00pm, PST

Contact_Instructions: Prefer email for communication.

Robert A. Leidy, USEPA, Region 9; San Francisco Estuary Institute

Microsoft Access95; ESRI ARC/INFO 7.2.1 Patch 2; Adobe Acrobat 4.0

Attribute_Accuracy_Report:

A local assemblage of fishes may be defined as those fishes that would be found together at one particularplace or locality. Fish assemblage structure (e.g., number of species, distribution or abundance of species at a locality, number of prey species versus piscivorous species, proportional composition of the assemblage by trophic groups or functional groups, body-size patterns for an assemblage, etc.) may vary considerably over time (i.e., morning to night, season to season, year to year) and space (e.g., riffle vs. pool, high-elevation headwater stream reach versus low-elevation reach near the stream mouth). Therefore, caution should be exercised in the data interpretation and any subsequent application of the data to define both broad- and fine-scale ecological patterns. Specific attention should be given to the limitations of the survey objectives and methods of this study when extending the data to other applications. For example, data on the distribution and abundance of fishes in this study was collected during the years 1992-1998. However, for many streams sampling was limited to a single sampling event. Any conclusions drawn from the data must therefore be drawn within the context of the natural temporal and spatial variability of stream ecosystems, as well as the objectives and methods of the study design. For more information, contact Robert A. Leidy, USEPA, Region 9.

Field survey station locations and descriptions were verified during database record entry. To create the GIS coverage, the station locations were first copied from the original USGS Quadrangle maps at the EPA to a second set of USGS Quadrangle maps housed at SFEI, and checked against the original set. These maps were then "heads-up" digitized using SFEI EcoAtlas control points and registered quadsheet images. 30% of the digitized station location points in the coverage were checked and verified against their original paper USGS quadsheet sources.

Not all streams or all sites on streams were sampled. A number of additional types of data were collected in the field, but have not been incorporated into the database. These include: length of survey location (m); floodplain, bankfull, and wetted-channel width (m); air and bottom water temperature (F); water depth (m); percentage of individuals of a species with visible external parasites; elevation (m) from the USGS 7.5' scale topographic map; stream discharge (cfs) estimated visually; visual estimates of percentage of wetted-channel containing emergent macrophytes or woody-rooted vegetation; visual estimates of percentage of water surface or substrate covered with algal mats; water clarity (1-5 scale, where 1 = crystal clear and 5 = extremely muddy); visual estimate of maximum percentage of stream channel surface shaded by riparian vegetation, boulders, or other structures; estimated extent of human modification (1-5 scale, where 1 = unmodified and 5 = extremely modified, according to Leidy and Fiedler 1985); percentage habitat type consisting of riffle or pool (according to the California Department of Fish and Game 1994); instream shelter rating for protection from stream velocity as provided by stream hydraulics, such as boulders, submerged vegetation, coarse woody debris, channel configuration, back-eddies, etc. (0-2 scale, where 0 = none, exposed to current, 1 = moderate, adjacent to current with slight protection, and 2 = major, complete current protection), visual isolation or reduction in horizontal "line-of-sight" (0-2 scale, where 0 = none, open, 1 = moderate, partially obscured, and 2 = major, mostly obscured), light reduction provided by turbidity, overhanging or submerged vegetation, undercut banks, etc. (0-2 scale, where 0 = none, bright, 1 = moderate, partially shaded, and 2 = major, dark); and percentage substrate as silt/clay/mud, sand, gravel, cobble, boulder, and bedrock (according to the Wentworth particle scale, Bovee and Milhous 1978). Estimates and measurements of substrate composition, water depth, and wetted-channel, bankfull, and floodplain widths were taken at 9-15 points at equal intervals of 3 measurements per transect along 3-5 equally spaced transects, set up perpendicular to stream flow. Percentage substrate composition was first visually estimated independently, and then confirmed collectively, by two observers centered on 1 square meter quadrat at each survey point. Channel confinement was calculated as average floodplain width (m) divided by average bankfull width (m). An estimate of the number of Oncorhynchus mykiss mykiss/O.m. irideus per 30 m of stream based on captured fish and visual counts of fish were made at each survey site. Amphibians that were captured or observed at each site were also noted by species. Unless otherwise noted, all habitat inventory protocols in this study followed those described in Flosi and Reynolds 1994.

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Survey stations represented 20m-50m reaches of streams and were marked and annotated on 7.5 minute USGS quadsheet maps with pencil crosshatches. Cumulative error (using the root-mean-squares method) is 27m. This error is within the range of station ground location lengths. It should be noted that error resulting from the relationship between the points marked on the USGS quadsheet and their actual field position was not assessed by SFEI. It should also be noted that the most detailed record of the survey location is the narrative decription recorded in the "Location" field in the database. This field describes the specific location and extent of the survey station in relation to local landmarks. The GIS coverage represents the general location of the survey stations in a digital form, but does not replace the specific narrative location description.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: 27

Horizontal_Positional_Accuracy_Explanation:

Maximum potential errors of spatial data included USGS quadsheet error (12.2m), relationship of marked station locations on maps to their actual ground locations (unknown), thickness of pencil crosshatch marks (1mm at 1:24K scale = 24m), registration of digital images of USGS quadsheets (registration error negligible; pixel size 3m), heads-up digitizing of station points (estimated at 4m), and registration error of control points (0.0008 digitizer inches = 0.5 m). Cumulative error calculated using root mean squares method.

Horizontal_Positional_Accuracy_Value: 27

Horizontal_Positional_Accuracy_Explanation:

Maximum potential errors of spatial data included USGS quadsheet error (12.2m), relationship of marked station locations on maps to their actual ground locations (unknown), thickness of pencil crosshatch marks (1mm at 1:24K scale = 24m), registration of digital images of USGS quadsheets (registration error negligible; pixel size 3m), heads-up digitizing of station points (estimated at 4m), and registration error of control points (0.0008 digitizer inches = 0.5 m). Cumulative error calculated using root mean squares method.

Methodology:

Methodology_Type: Field

Methodology_Identifier:

Methodology_Keyword_Thesaurus: None

Methodology_Keyword: Field Survey

Methodology_Description:

The primary goal of fish sampling was to document the present distribution and abundance of native stream fishes in the Bay Area. Stream locations known to contain native fishes based on historical records were surveyed to document local species distribution and abundance. Additional locations were surveyed where historical information was incomplete. At each location, an effort was made to survey the full range of habitat types (e.g., riffle, run, pool) within representative stream reaches and geomorphic settings (e.g., high-elevation, high-gradient, bedrock controlled; low-elevation, low gradient, alluvial unconsolidated bottom, etc.). Stations were selected to maximize the diversity of habitat types in different geomorphic settings. Stream reaches were typically sampled above the influence of diel tidal fluctuations, but there were exceptions. Selection of fish survey techniques depended on site-specific physical characteristics and conditions. The method employed was the one that would survey a site most thoroughly. Fish survey relied on one or more of the following techniques: electrofisher, minnow or beach seine, dip net, gill net, and snorkel and mask. Surveying with a Smith-Root Type XI backpack electrofisher was the most often employed method, primarily in reaches with depths of less than 1 meter (m) and water velocities of less than 3 second-feet. Electrofishing was conducted in a downstream-to-upstream direction for a minimum distance of 30 m, except in two situations. First, many survey locations were characterized by isolated pools less than 30 m in length, which were embedded within a matrix of dry stream bed. In these situations single or multiple pools were surveyed. Although an effort was made to survey a minimum of 30 m, survey distance often exceeded this. Second, distances of greater than 30 m were electrofished when either no, or few, fishes were collected within the first 30 m surveyed. This additional effort was directed at certifying the presence or absence of species. An effort was made to survey all habitats within a reach with equal effort (i.e., survey time and area surveyed), however, habitats immediately adjacent to stream banks often received more intensive surveying because these areas typically provided the most complex habitat for fishes, and therefore required the most attention. Block nets were used at the upstream and downstream ends of the survey location if physical conditions (e.g., high water velocities, poor water clarity, etc.) warranted their use. Electrofishing was conducted by either 2 or 3 person crews, with all members of the crew collecting stunned fish by dip net. Fish surveying at depths greater than 1 m was typically accomplished by minnow and/or beach seine, gill nets, or snorkeling with a mask. Surveying effort varied among these methods although most surveys conformed to the minimum 30 m survey distance. A student minnow seine was used to depths of 1 m while depths of between 1 m - 2 m were surveyed with a beach seine. Student and beach seines were constructed of 6-mm mesh and both were 1.5 m x 2 m and 2 m x 4 m in depth and width, respectively. Very shallow habitats (typically < 5 cm depth), where electrofishing and larger nets were not effective were surveyed with either small-size mesh dip nets (4-6 mm mesh) or fish were identified in-situ. Depths greater than 2 m were typically surveyed with gill nets (13- and 19-mm mesh nets, 2 m deep and 10 and 20 m in length) or by in-situ observation with a snorkel and mask. Gill nets were set for a period of two hours. The time of day of net set and retrieval varied. A mid-water trawl was used to survey sites in the Napa and Sonoma Marsh complex. For each collection site the following information was recorded: survey date and time; stream name(s) and narrative location; survey station (numbered sequentially for all sites surveyed on the same date); county name; and USGS 7.5 minute quadrangle name. The following data were collected: mm fork length (FL) or total length (TL), unless more than 30 individuals of a species were caught, in which case a representative 30 fish were measured and additional information were summarized with a narrative comment; the total number of species; the percentage native fish species in the collection. Estimates were made of the abundance in the sample of young-of-the-year, salmonids, and sculpins (0-3 scale, where 0 = no individuals, 1 = 1-24 individuals, 2 = 25-50 individuals, and 3 = >50 individuals); percentage of sample consisting of native species by abundance (1-3 scale, where 0 = no native fishes, 1 = 1-33% of the total number of individuals collected were native, 2 = 34-66% of the total number of individuals collected were native; and 3 = 67-100% of the total number of individuals collected were native).

Methodology_Citation:

Citation_Information:

Originator:

United States Environmental Protection Agency, Region 9

Publication_Date: Unpublished Material

Title:

Robert A. Leidy Fish Survey 1992-1998 Field Methods

Methodology_Type: Field

Methodology_Identifier:

Methodology_Keyword_Thesaurus: None

Methodology_Keyword: Fish identification

Methodology_Description:

All fish were identified using one or more of the following references: Moyle 1976; Moyle 1976 (as per 1997 key revisions); Lawrence and Burr 1991. All collected fish were released, with the exception of a few voucher specimens, which were preserved in 10% formalin. Each survey site was photo-documented by taking a minimum of 2 photographs with a wide angle lens; one looking upstream and one looking downstream from a location at the centerpoint of the site.

Methodology_Citation:

Citation_Information:

Originator:

United States Environmental Protection Agency, Region 9

Publication_Date: Unpublished Material

Title:

Robert A. Leidy Fish Survey 1992-1998 Field Methods

Methodology_Type: Lab

Methodology_Identifier:

Methodology_Keyword_Thesaurus: None

Methodology_Keyword: Database

Methodology_Keyword: Relational Database

Methodology_Description:

The database was modeled off the field datasheets. The design consists of three major groups of linked tables. The first group stores information about species nomenclature, such as scientific name, common name, family name, native designation, and phylogenetic order. The second group stores information about the survey stations and other location information, such as stream, watershed, county, and respective USGS 7.5 minute quadrangle. The final group stores the survey event data, namely, collection date, collection time, list of observed species and associated measured fork or total lengths, and any survey collector assigned species ratings. As a group, this latter set of tables serves as the link between the other two sets, the species nomenclature group and station location group. Data were transcribed from copies of the original datasheets during January to May 1999. The datasheet copies were sorted and organized by SFEI and assigned a distinct ID (SFEI Sheet ID number). Each datasheet represents one survey event. Please note, there are no field datasheets for SFEI Sheet ID# LF185 or LF203; these IDs were assigned to duplicate datasheets and subsequently discarded. The master list of fish species and families was provided by Robert Leidy. This list represents possible species within Bay Area streams, and not just those surveyed in the 1992 to 1998 fish survey. Species information about each survey event was taken from the field datasheets. All surveyed fish have been made to conform to the above master species list. Instances of no observed species at survey event have been flagged in the database. Cases of no individuals or no measured lengths are coded as -9 in the database. All field collector-assigned species abundance ratings were taken directly off the field datasheets. The master list of stations and associated information was compiled and organized by SFEI based upon the field datasheets. Each station has been assigned a distinct ID (SFEI Station ID number). Station location narrative descriptions were transcribed off the field datasheets with minimal editing. Stream names were taken primarily from the USGS 7.5 minute quadrangles. In cases of duplicate stream names within the Bay Area, the county name for that stream was included into the stream name designation. Watershed designations were assigned by SFEI and U.S. EPA based upon the name of the main channel connecting to the Bay. For sample stations in tidal sloughs, the corresponding Baylands Segment (Goals Project 1999, p.95) is identified. Several streams and watersheds remain unnamed. Please see Appendix 2 of the Bay Area Stream Fishes: Robert A. Leidy Fish Survey 1992-1998 Documentation summary and datasheet reports, Version 1.2 for specific details on the database design and table structure.

Methodology_Citation:

Source_Information:

Source_Citation:

Citation_Information:

Originator:

United States Environmental Protection Agency, Region 9

Publication_Date: Unpublished Material

Title: R.A. Leidy Fish Survey 1992-1998 Field Records

Type_of_Source_Media: Paper

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19920410

Ending_Date: 19980723

Source_Currentness_Reference: observed

Source_Citation_Abbreviation: None

Source_Contribution: Provided field records of survey

Source_Information:

Source_Citation:

Citation_Information:

Originator:

United States Environmental Protection Agency, Region 9

Publication_Date: Unpublished Material

Title:

R.A. Leidy Fish Survey 1992-1998 Annotated USGS Quadrangle maps

Edition: Unknown

Geospatial_Data_Presentation_Form: document

Source_Scale_Denominator: 24000

Type_of_Source_Media: Paper

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19920410

Ending_Date: 19980723

Source_Currentness_Reference: observed

Source_Citation_Abbreviation: None

Source_Contribution: Used as basemap for station location digitizing

Source_Information:

Source_Citation:

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1981

Source_Currentness_Reference:

Source_Citation_Abbreviation: ALT

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey (USGS)

Publication_Date: 1993

Publication_Time: Unknown

Title: Briones Valley Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: Map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Source_Currentness_Reference:

Source_Citation_Abbreviation: BRV

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Calaverous Reservoir Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1961, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1980

Source_Currentness_Reference:

Source_Citation_Abbreviation: CLR

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1993

Publication_Time: Unknown

Title: Calistoga Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Source_Currentness_Reference:

Source_Citation_Abbreviation: CAL

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1991

Publication_Time: Unknown

Title: Castle Rock Ridge Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1991

Source_Currentness_Reference:

Source_Citation_Abbreviation: CRR

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1993

Publication_Time: Unknown

Title: Chiles Valley

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1958, photorevised 1993

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Source_Currentness_Reference:

Source_Citation_Abbreviation: CHV

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1994

Publication_Time: Unknown

Title: Clayton Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details:

Original Publication date 1953, photorevised 1980, minor revision 1994

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1994

Source_Currentness_Reference:

Source_Citation_Abbreviation: CTN

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Cordelia Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1951, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1980

Source_Currentness_Reference:

Source_Citation_Abbreviation: COR

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Cotati Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1954, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1980

Source_Currentness_Reference:

Source_Citation_Abbreviation: COT

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1991

Publication_Time: Unknown

Title: Cupertino Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1991

Source_Currentness_Reference:

Source_Citation_Abbreviation: CUP

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1981

Publication_Time: Unknown

Title: Cuttings Wharf Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1949, photorevised 1981

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1981

Source_Currentness_Reference:

Source_Citation_Abbreviation: CTW

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1993

Publication_Time: Unknown

Title: Detert Reservoir Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Source_Currentness_Reference:

Source_Citation_Abbreviation: DTR

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Dublin Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1961, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1980

Source_Currentness_Reference:

Source_Citation_Abbreviation: DUB

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1971

Publication_Time: Unknown

Title: Gilroy Hot Springs Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details:

Original Publication date 1955, photorevised 1971, photoinspected 1978

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1971

Source_Currentness_Reference:

Source_Citation_Abbreviation: GHS

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Glen Ellen Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1954, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1980

Source_Currentness_Reference:

Source_Citation_Abbreviation: GLE

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1993

Publication_Time: Unknown

Title: Hayward Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1993

Source_Currentness_Reference:

Source_Citation_Abbreviation: HAY

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1971

Publication_Time: Unknown

Title: Isabel Valley Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1955, photorevised 1971

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1971

Source_Currentness_Reference:

Source_Citation_Abbreviation: ISV

Source_Contribution: Basemap for feature locations

Source_Information:

Source_Citation:

Citation_Information:

Originator: United States Geological Survey

Publication_Date: 1980

Publication_Time: Unknown

Title: Kenwood Quadrangle

Edition: Unknown

Geospatial_Data_Presentation_Form: map

Series_Information:

Series_Name: 7.5 Minute Series (Topographic)

Issue_Identification: Unknown

Publication_Information:

Publication_Place: Denver, Colorado

Publisher: United States Geological Survey

Other_Citation_Details: Original Publication date 1954, photorevised 1980

Source_Scale_Denominator: 24000

Type_of_Source_Media: paper

Source_Time_Period_of_Content: