File Geodatabase Feature Class
Tags
post-larval sampling, abundance and distribution, 20mm survey, larval fish, delta smelt, longfin smelt, striped bass, Sacramento splittail, threadfin shad, pelagic organism decline, POD, electrical conductivity, ec, temperature, secchi, Delta, San Francisco Estuary, San Joaquin River, Lower Sacramento River, Suisun Bay, San Pablo Bay, Montezuma Slough, Napa River, Carquinez Straits, Grizzly Bay, Honker Bay, Mokelume, North Delta, South Delta, East Delta, confluence, California, biota, environment
The database was designed to house and track all records of sampling events including all fish and zooplankton encountered using the prescribed sampling methods. This database is used by the CA DFG Delta Smelt Project staff to assess the relative abundance and distribution of the federally and state ESA listed delta smelt. Assessments made from this dataset are used frequently by CA water operations managers to minimize adverse impacts on the population due to entrainment into the State Water Project and the Central Valley (water) Project in the South Delta. Delta Smelt Project staff also use this database to directly update the Project web page for public data display.
All records are from the upper San Francisco Estuary. Each record represents a Sampling event at a particular location on a particular date with associated Environmental Quality (EQ) data. Related records include specific tow data, associated catch data and related individual fish data. Other Sampling event-related records include zooplankton net tow data and zooplankton catch data. For fish records: 4608 sampling records containing 13345 sampling event records containing 40072 fish encounter records containing 511493 fish length records. For zooplankton records: 8469 sampling event records containing 101527 zooplankton encounter records. 41 core stations have been sampled over the period of record. Station locations were set within the historical range of the delta smelt.
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Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.
Extent
| West | -122.358294 | East | -121.362175 |
| North | 38.336518 | South | 37.846672 |
| Maximum (zoomed in) | 1:5,000 |
| Minimum (zoomed out) | 1:150,000,000 |
Disclaimer: The State makes no claims, promises, or guarantees about the accuracy, completeness, reliability, or adequacy of these data and expressly disclaims liability for errors and omissions in these data. No warranty of any kind, implied, expressed, or statutory, including but not limited to the warranties of non-infringement of third party rights, title, merchantability, fitness for a particular purpose, and freedom from computer virus, is given with respect to these data.