Streamflow Monitoring

Streamflow Monitoring


Real-time Streamflow Measurements Provide Up-to-Date Data
for Water Users

The amount of water flowing through a creek at any particular time influences the flora and fauna that use the creek and its surrounding area as habitat. In order to better understand streamflow at specific sites Napa County Flood Control and Water Conservation District engages in extensive stream monitoring to measure how much water is flowing at any given time and specifically to operate a flood warning system. RCD aids in this effort by regularly calibrating and maintaining systems and by providing measurements at several stations on Napa River tributary creeks. Streamflow information is available to the public online at The data can be used in practical studies related to floods, developments, and fish passage design.

View recent Streamflow Monitoring Reports

Quick facts:

  • Significance: Streamflow monitoring can provide vital information for several different types of practical uses including flood monitoring and modeling, bridge and culvert design, fish passage design, and by-pass requirements.
  • Where: The Napa River and Huichica, Carneros, Milliken, Salvador, Dry, Sulphur, and York Creeks
  • Results: The RCD continues to provide important streamflow measurements to local water user’s, landowners, and developers in order to empower informed decision-making.
  • Funds: Napa County Flood Control and Water Conservation District, Department of Fish and Wildlife, private landowners