Streamflow Monitoring for the San Francisco Bay Area Inventory and Monitoring Network

Fong, Darren

This project contains products resulting from Streamflow monitoring at the San Francisco Bay Area Network, Inventory and Monitoring Program. Streamflow monitoring objectives are to: 1. Monitor the variability and long-term trends in streamflow using fixed, continuous, water stage recording stations by producing annual mean daily and monthly discharge estimates for core streamflow monitoring stations in GOGA, PRES, PINN, and PORE. 2. Monitor the frequency, magnitude and duration of peak flow events at fixed, surface water level monitoring stations by producing peak and daily summaries of stage height and discharge for core streamflow monitoring stations in GOGA, PORE and PINN. 3. Monitor the timing, frequency, magnitude and duration of unnatural or extreme low water/low flow events in stream reaches known to support threatened and endangered aquatic species in the dry season in GOGA, PORE, and PINN watersheds. The SFAN Streamflow Monitoring Program includes six core streamgages: Redwood Creek(GOGA); Bear Creek (PINN); Olema Creek (PORE); Lobos Creek (Presidio of San Francisco); Lagunitas Creek at Samuel P Taylor State Park (GOGA/PORE); and Lagunitas Creek at Point Reyes Station (GOGA/PORE). I&M program monitoring efforts are focused at three of these core streamgages including Redwood Creek, Bear Creek and Olema Creek. The USGS operates and maintains the two core streamgages on Lagunitas Creek. Data from Lobos Creek is collected by the Presidio Trust but is managed by the I&M program. Data are collected year-round at streamgages. The primary sampling parameters at core stations include water surface levels or stage height at the streamgages and individual measurements of stream discharge (cubic feet per second [cfs]). Discharge is computed at recording streamgages based upon stage-discharge relationships. Collected supplementary parameters include level data, water temperature, and rainfall.

Streamflow Monitoring for the San Francisco Bay Area Inventory and Monitoring Network

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