High river flows on the San Joaquin River at the San Joaquin River National Wildlife Refuge in Stanislaus County, California. Photo taken June 13, 2023. Florence Low / DWR

NOW AVAILABLE: San Joaquin Basin Flood-MAR Watershed Studies online data portal and metrics dashboard

From the Department of Water Resources:

Satellite imagery from NOAA’s GOES system taken during California’s historic 2023 water year showing the Sierra Nevada with colored overlays delineating the five study areas of the San Joaquin Basin Flood‑MAR Watershed Studies (from north to south: Calaveras, Stanislaus, Tuolumne, Merced, and Upper San Joaquin)

Last December, DWR released the San Joaquin Basin Flood-MAR Watershed Studies (Watershed Studies) — five individual reports (covering the Calaveras, Stanislaus, Tuolumne, Merced, and Upper San Joaquin watersheds) and a summary document that together provide an in-depth look at the future climate challenges and adaptation opportunities within the San Joaquin Basin.

The Watershed Studies examined 185 performance metrics tracking system-wide conditions across three major water management sectors — flood, water supply (surface and groundwater), and ecosystems. The results were collected at and aggregated across various reporting units, including watershed study areas, groundwater subbasins, districts, reservoirs, rivers and creeks, flood control points, diversion locations, and stream reaches.

This information is now publicly available through the San Joaquin Basin Watershed Studies Metric Dashboard, an interactive tool for exploring the climate vulnerabilities and adaptation potential of flood-managed aquifer recharge (Flood-MAR) strategies in the San Joaquin River Basin.

An equally valuable tool, the San Joaquin Basin Watershed Studies Data Download Portal provides access to all results documented in the Watershed Studies reports. Users can search and download specific data based on location or metrics type.

Both the dashboard and the portal websites offer video tutorials on how to navigate the database to view various results and how to use filters to download data.