From the Bureau of Reclamation:

“As of May 7, 2026, the Fontenelle Reservoir pool elevation is 6478.92 feet, which amounts to 46 percent of live storage capacity. Inflows for the month of April totaled approximately 45,915 acre-feet (af) or 54 percent of average.

Current releases are 800 cfs. This release is expected to remain constant through May.

The May final forecast for unregulated inflows into Fontenelle for the next three months projects much below average conditions. May, June, and July Most Probable inflow volumes amount to 65,000 af (37 percent of average), 165,000 af (54 percent of average), and 79,000 af (47 percent of average), respectively.

Please refer to the following link for Green River flow projections, through Green River, WY, provided by the Colorado River Basin Forecast Center: CBRFC Green River, WY Projection.

To view the most current reservoir elevation, content, inflow and release, click on: Fontenelle Reservoir Data.”

What this means:

Water releases from Fontenelle Reservoir are currently around 633 CFS.

The flows are low, but consistent. Sow bugs, baetis, worms, and midges have been working best. On some days there have been windows of dry fly activity with terrestrials. The streamer fishing continues to produce with sculpin, baitfish, and crayfish patterns.

Current water year to date precipitation in the Upper Green River Drainage is 98 percent of normal. Current water year to date precipitation in the Lower Green River Drainage is 92 percent of normal.