SDE Feature Class
mykiss, steelhead, stream, watershed, fisheries, habitat, restoration, South Coast, planning, aquatic, biota, Santa Barbara County, inlandWaters, Oncorhynchus, basin, hydrography, river, environment, fish, in-stream, hydrologic, surveys
This database helps identify and describe instream habitat available to anadromous salmonids within the surveyed streams. The data were collected by Department of Fish and Game primarily to: 1) provide a useful source of information for evaluating, designing and monitoring stream habitat improvements for salmonids based on critical fish habitat needs and 2) aid in internal management decisions regarding stream restoration projects and potential. DATA LIMITATIONS AND ASSUMPTIONS For analytical purposes, users should assume that data collection methods were similar enough between streams, years, and observers to allow comparison of relative values. Observer bias is presumed to be low to non-existent. Reach-level in-stream habitat data are designed for suitability assessment of salmonid habitat at local levels. They should not be used for large watershed-level assessment tasks as assessment at this level would require either complete stream sampling or a statistically derived sample design providing for assignment of measured parameters, within acceptable error limits, on a watershed-wide basis. KNOWN CAVEATS OF THE DATA: A significant scaling error often occurs in these data. Some of this error could be from mapping fine-scale ground measurements to a coarser map scale. In most cases, distances measured at a fine scale will exceed measurements at a course scale (Mandelbrot, 1982). Due to this and other error sources, habitat units for some streams may not be accurately placed on the map. GPS units were used to collect latitude/longitude waypoints at various points throughout the survey. These were used to more accurately locate the start and end of stream reaches as opposed to the alternative of using distances upstream and dynamic segmentation. This will hopefully eliminate some of the scaling error. Habitat conditions can change drastically both from year to year and within a season. Factors to consider when comparing between years or seasons include variable stream flows (especially flood events), temperatures and silt loads. Use caution when analyzing these data with other time-dependent data such as stream biological inventories and salmon carcass surveys.
This dataset contains in-stream salmonid habitat data summarized at the reach level. The data have been summarized from habitat unit level data collected by DFG from November 2010 into September 2012. The database represents salmonid stream habitat surveys from 12 streams. Approximately 160 miles of streams were surveyed. The database helps identify and describe in-stream habitat available to anadromous salmonids within watersheds of the Santa Ynez hydrologic unit of the Central Coast Hydrologic Regions. Data were collected using standardized survey techniques according to the version of the "California Stream Habitat Restoration Manual" (see Flosi et al.) that was current in the year of survey. Field survey teams measured up to 60 parameters for selected habitat units. Stream surveys typically started at the downstream confluence and proceeded upstream to the "limit of anadromy" as assessed by the survey crew. WHAT EACH RECORD REPRESENTS Each record in this dataset represents in-stream habitat unit level data summarized at the stream reach level. A habitat unit is the base level for the stream habitat surveys and is generally determined by the occurrence of riffle, run and pool sections along the stream. Stream reaches are determined by changes in stream channel type as described by Rosgen (1994).
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Use in accordance with the California Salmonid Stream Habitat Restoration Manual.