File Geodatabase Feature Class
Tags
Spring Kodiak Trawl, Delta Smelt, SKT, salinity, temperature, temp, confluence, 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, California, biota, environment
The Spring Kodiak Trawl (SKT) was started to monitor and provide information on prespawning and spawning delta smelt distribution in the upper San Francisco Estuary. SKT conducts fish surveys to determine the timing, distribution, and abundance of spawning delta smelt and to provide maturity/egg-stage data for adult delta smelt. The suveys help estimate delta smelt fish losses and determine the magnitude of entrainment of both larval and adult delta smelt at CVP and SWP intakes. Improved detection of delta smelt will better inform water-export facility operators of the potential to entrain adult delta smelt in subsequent weeks and their offspring later in the year.
The data collected: surface water temperature, surface water electro-conductivity, water transparency, water volume sampled, tidal stage, and fish information. The geographic range of field work is the upper San Francisco Estuary. The number of sampling sites: 39 sites from 2002 to 2004. 40 sites from 2005 to present. The sample frequency per time unit (week, month): starting in early January, sampling is conducted every other week and continues until late Spring, or until detectable spawning of delta smelt has ended. The Delta-wide distributional survey (4-5 days) takes place at the beginning of the month and the Supplemental survey (2 days) occurs two weeks after.
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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 | -122.315202 | East | -121.363651 |
| North | 38.336518 | South | 37.928593 |
| 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.