
Weekly River Report
May 28, 2026 -
Summary:
Runoff season is here and while flows across the Roaring Fork Watershed increased over the last week, rivers continue to flow below average (34-66% of normal). While runoff is only a fraction of what we’re used to seeing, Crystal River flows doubled over the last week! Of the nine SNOTEL sites in the Roaring Fork watershed, Castle Peak is the only one reporting measurable SWE, which decreased 4.4 inches since last week. Transbasin diversion tunnels are also flowing below average for this time of year. These tunnels move water from the west slope to the east slope for municipal, industrial, and agricultural needs. Boustead Tunnel on the headwaters of the Fryingpan River is diverting 48 cfs (11% of normal) and Twin Lakes tunnel on the headwaters of the Roaring Fork River is diverting 141 cfs (54 % of normal).


Calling All River Users to Protect Waterways from New Threats
It is time for every water user to take seriously their role in being a river steward. After you fish, boat, kayak, or stand-up paddleboard CLEAN, DRAIN, and DRY all your gear. Every time. Yes, really, every time.