Otero County Water Intelligence Brief

Arkansas River Basin | October 26, 2026

Situation Summary

Arkansas River streamflow conditions in Otero County are limited this late in the irrigation season, with the Apishapa River near Fowler registering 85 cfs on a rising trend and Arkansas River gauges at La Junta and Rocky Ford currently offline. Early-season Fry-Ark imported water shortfalls have defined the 2026 supply picture for Fort Lyon, Catlin, and Holbrook irrigators, and late-October conditions reflect the tail end of a constrained delivery year. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

Upper Arkansas headwater SNOTEL stations are reporting early-season accumulation above their respective historical medians for this date, signaling the first measurable snowfall of the 2026–2027 accumulation season.

Brumley (Lake County): SWE of 0.7 inches, representing 699% of the 0.1-inch median for this date, with a snow depth of 4.0 inches. This above-median reading reflects early-season accumulation at this station rather than an operationally significant snowpack.

Saint Elmo (Chaffee County): SWE of 1.3 inches, representing 260% of the 0.5-inch median for this date, with a snow depth of 6.0 inches. Similar early-season signal — above the low October median, but not yet indicative of meaningful water supply volume.

Both stations melted out 4–6 weeks ahead of the historical median meltout date earlier in 2026, driven by the anomalous March heat wave. That early meltout is background context for this season's supply constraints. The current above-median percentages reflect how small the historical October medians are at both locations — even modest early snowfall registers as a large percentage. Otero County irrigators should not interpret these figures as a recovery signal; meaningful 2026–2027 snowpack accumulation and its implications for Pueblo Reservoir inflows will not be assessable until mid-winter.

Streamflow Conditions

Apishapa River near Fowler, CO: Flowing at 85 cfs with a rising trend as of October 26. The Apishapa is a tributary of the Arkansas River in Otero County and serves as a real-time indicator of local drainage and late-season moisture response. A rising signal in late October may reflect recent precipitation runoff in the upper Apishapa watershed.

Arkansas River at La Junta, CO: No recent flow data available from this gauge as of October 26. La Junta is the primary mainstem indicator for Otero County water managers, capturing Arkansas River flow after Fort Lyon Canal diversions upstream. The absence of current data limits real-time supply assessment for lower-valley irrigators.

Arkansas River near Rocky Ford, CO: No recent flow data available from this gauge as of October 26. The Rocky Ford gauge captures flow after Fort Lyon Canal diversions — comparing it to La Junta readings, when both are active, provides an approximation of diversion volumes. Both gauges being offline reduces situational awareness at a time when late-season accounting is relevant.

Water managers should contact USGS Colorado Water Science Center or check waterdata.usgs.gov directly for gauge restoration status.

Seasonal Guidance

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

Data Sources: SNOTEL data through October 25, 2026; USGS streamflow data through October 26, 2026

Data Current As Of: October 26, 2026; compiled using NRCS SNOTEL network and USGS National Water Information System

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, U.S. Bureau of Reclamation Eastern Colorado Area Office (Loveland, CO), and Southeastern Colorado Water Conservancy District (SECWCD) for regulatory decisions and water rights administration. Colorado prior appropriation law governs all surface and tributary groundwater use in Water Division 2.