Weekly Water Conditions
Hydrologic data is reported for the current Water Year 2026 (Oct. 1 - Sept. 30). The information on this page is updated weekly. For current weather forecasts and rainfall accumulation, we suggest the following websites:
Rainfall, reservoir level, streamflow, and water production information is reported for the seven-day period ending on 6/21/2026.
Seasonal Rainfall in Santa Cruz
(in inches)
Rainfall statistics are reported from the CIMIS weather station #104 at DeLaveaga.
Precipitation: 0.05
Season to date: 27.77
Average season to date: 29.64
Cumulative Precipitation Chart(PDF, 107KB)
Seasonal Rainfall at the Loch Lomond Reservoir
(in inches)
Precipitation: 0.00
Season to date: 46.52
Water Level at Loch Lomond Reservoir
(in feet above mean sea level; lake spills at 577.15 feet)
Currently: 575.85
Percent of capacity: 97.6
San Lorenzo River Streamflow
Average Daily Water Production
(in million gallons per day)
For the past week: 7.3 mgd
Contact Us
Please submit questions regarding the posted watershed hydrologic data to the webpage administrator at mtarian@santacruzca.gov.