News

Roza Water Users: The March water supply forecast is 44%. The low end forecast is 31% supply. The high end forecast is 68% supply.  The next water supply forecast will be issued on April 9, 2026. Water in storage is…

Roza Water Users- USBR’s hydrologists and our hydrologist tell us that Rimrock will still fill completely in 2026. The filling rate is tracked and managed daily very closely in Yakima, at the regional USBR office in Boise and at USBR’s…

Outflows at Rimrock are in the process of being reduced to minimum target flows for fish because the atmospheric river this week didn’t hit the Rimrock drainage as much as was initially projected 10 days ago.   USBR’s hydrologists and…

The attached information was reviewed with the Roza Board this week. It includes 35% and 45% water supply scenarios in order to begin painting the picture for how the 2026 irrigation season could look without improved snowpack. Hypothetical prorationing dates…

Roza Water Users: The current snowpack and reservoir status does not bode well for water supply the 2026 irrigation season.  Without an improvement in the snowpack, we will be looking at a severe shortage again in 2026. The current forecast…