SDE Feature Class
Sacramento sucker, cutthroat trout, riffle sculpin, green sunfish, environment, California, mosquito fish, brown trout, biota, Sacramento pikeminnow, brook trout, largemouth bass, inlandWaters, fathead minnow, California roach, rainbow trout, bluegill, brown bullhead
The TARRI database was developed to: * demonstrate the feasibility of compiling a significant amount of the known aquatic fauna data for a finite geographical area. * provide resource managers with a foundation of information on what species have occurred in the area and under what conditions (reference conditions). This will allow data-driven decisions on appropriate monitoring and management activities to ensure protection of the resources. * provide the means to integrate related datasets from available information on species occurrence, population dynamics and habitat conditions to allow fisheries managers to make informed decisions in areas such as setting angling regulations and watershed planning. Incorporating the data into BIOS provides the additional capability of spatial analysis of the data. * provide a data model that could be adapted and expanded statewide. * serve as a reference resource for educators, anglers and other members of the general public. Known Caveats of the Data The accuracy of all identifications in the data set is ultimately the responsibility of the listed identifier. All counts and their subsequent population estimates must be viewed as only a single data point in time and space. Populations are known to vary widely over time as well as over a single stream reach. UTM readings were taken using NAD27 as this was the original protocol.
This dataset is a subset of the Tuolumne Aquatic Resources Relational Inventory (TARRI) compiled by Brian Quelvog, California Department of Fish and Game. The database focuses on estimates of fish populations in the central Sierra Nevada counties specifically Tuolumne, Calaveras, Stanislaus, Mariposa, Mono, and Alpine counties. Information includes the number of individuals per species collected during each of two or three passes with backpack electrofisher(s), section length, section width, date, species sampled, the identifier, UTM coordinates, and (if available) photographs of the site. The species documented include rainbow and brown trout, centrachids such as bluegill and green sunfish, cyprinids such as roach and hitch, as well as other groups (eg. mosquitofish and catfish). Over seventy-five sources of information were used in making the data set including aquatic surveys by several agencies, although most of the information is contained in file reports from the California Department of Fish and Game. Collection dates range from 1979 to 2003. What each record represents Each record represents the collection, identification, and count of one species of fish during one of two or three passes with backpack electrofisher(s), the zone, water, site, UTM coordinates, date, and person or organization responsible for the survey.
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|Maximum (zoomed in)||1:5,000|
|Minimum (zoomed out)||1:150,000,000|