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Delta Sediment Data Inventory: Data Links

DWR Central District

Parameters collected: Bathymetric changes and flow data

Frequency of collection: Twice a year (mostly)

Method of parameter collection: Recently switched to RTK surveying techniques

Data format: Unknown

Period of collection: Variable. Some data from the sixties (especially in the South Delta)

Parameter collection location: 11 sites throughout the Delta. Also, other highly variable, mostly one time surveys of other Delta areas

URL/Contact: Information not on-line yet, but they’re starting to organize data with GIS. Contact Scott Flory ( or John Ho ( for data requests (get permission).

Notes: Get specific site locations from Shawn Mayr. Bathymetry data is rarely better than within +/-6”. Datums are much better now, but about pre-2003 are suspect. Now using RTK (Real Time Kinematic) survey technique to tie data into NAVD88 datum (data accuracy better than +/-6”). Would like to start monitoring vegetation.

Files available for download:
  Sediment Monitoring Sites
    North Delta Scour Monitoring Sites
    South Delta Scour Monitoring Sites


Version 1.2    This page was last updated on May 7, 2010 and will continue to be updated frequently.