Gooding County Water Intelligence Brief

June 29, 2026 | Free-Tier Edition

Situation Summary

Gooding County enters peak irrigation season with Snake River deliveries sustained by upstream storage carry-over, while the Big Wood River tributary system has fully exhausted its snowpack following a historic early-melt spring. ESPA spring discharge at the Thousand Springs / Hagerman Valley complex remains the critical supply variable for trout aquaculture operators, with the Malad River near Gooding currently reflecting active spring flow. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

Galena Summit (490:ID:SNTL) — Big Wood River Headwaters

*Reading: June 28 — 0.0" SWE, 0.0" snow depth*

Galena Summit, the primary snowpack monitoring station for the Big Wood River headwaters in the Sawtooth Range, is reporting 0.0" snow water equivalent and 0.0" snow depth. For late June, a median SWE of 0.0" is the historical norm — this reading does not indicate a below-normal condition for today's calendar date. The accurate signal for 2026 is timing: the Galena Summit snowpack melted out 4–6 weeks ahead of the historical median meltout date, driven by an anomalous March heat wave across the Mountain West. Big Wood River tributary contributions to the Snake River near Gooding that would typically extend into late spring have already concluded. No additional snowmelt-driven inflows from this system should be anticipated for the remainder of the irrigation season.

Streamflow Conditions

Malad River near Gooding (USGS 13152500) — ESPA Spring Discharge Proxy

*Reading: June 29 — 476 cfs (rising)*

The Malad River near Gooding is the primary indicator of ESPA spring discharge for the Hagerman Valley. At 476 cfs and rising, spring flow from the Thousand Springs complex is currently active. Unlike snowmelt-driven tributaries, the Malad River reflects Eastern Snake Plain Aquifer levels and spring discharge rate rather than seasonal precipitation — its relative stability is characteristic. Trout aquaculture operators in the Hagerman Valley should note the rising trend as a near-term positive signal for spring water availability.

Seasonal Guidance

Subscribe for the full brief including reservoir storage, weather forecasts, depletion analysis, and detailed operational recommendations.

Data Sources: SNOTEL data through June 28, 2026; USGS streamflow data through June 29, 2026

Data Current As Of: Data current as of dates listed above. Agency contacts verified as of publication date.

Important Disclaimers: This brief provides automated analysis for informational purposes only. Specific numerical claims have not been independently verified. Consult official sources including your local water district; Idaho Department of Water Resources (IDWR — administers Water District 36 for middle Snake River and tributary water rights, and administers separate spring water appropriations for Hagerman Valley trout aquaculture and dairy operations); Idaho Department of Fish and Game (co-manages Thousand Springs State Park area); and U.S. Bureau of Reclamation, Pacific Northwest Region (Boise office) for upstream storage and delivery context. This brief does not constitute water rights advice or legal guidance.