Otero County, CO — Water Intelligence Brief

Arkansas River Basin | July 13, 2026 | Free-Tier Edition

Situation Summary

Otero County is entering the critical mid-season irrigation window under one of the most constrained supply conditions in recent memory. The 2026 Fryingpan-Arkansas Project import forecast of approximately 6,500 acre-feet — roughly 10% of the 20-year average — represents an extraordinarily severe shortfall in transbasin supply, and upper Arkansas basin snowmelt has now fully concluded, meaning Pueblo Reservoir inflows are tapering toward base flow with no additional snowpack pulse expected. Reservoir storage data, 7-day forecast details, and canal delivery projections are available in the full brief.

Snowpack Conditions

Both SNOTEL stations serving the upper Arkansas headwaters are reporting end-of-season conditions consistent with the anomalously early 2026 melt cycle.

Saint Elmo (Chaffee County, elev. ~11,000 ft) — July 12 reading: SWE 0.0", snow depth 0.0". No percent-of-median figure is reported because the historical median SWE for this date is also 0.0" — the station is at its normal seasonal condition for mid-July. The critical signal here is not today's reading but timing: Saint Elmo melted out approximately 4–6 weeks ahead of the historical median meltout date, driven by the anomalous March 2026 heat event. That early meltout means the spring runoff pulse into Turquoise Lake, Twin Lakes, and ultimately Pueblo Reservoir arrived and largely concluded well before typical peak storage season.

Brumley — July 12 reading: Data collection issues; no valid reading available. Brumley's upper Arkansas headwaters position makes it a relevant indicator, but the data gap means it cannot be used to supplement the Saint Elmo signal this period. Users should not interpret the absence of Brumley data as a neutral or positive supply signal.

Bottom line: The snowpack signal for the upper Arkansas basin is exhausted. No meaningful SWE remains at either monitored station. Pueblo Reservoir inflows are now driven by base flow and any monsoon precipitation — not snowmelt.

Streamflow Conditions

Three USGS gauges cover Otero County's primary supply corridor; current conditions reflect a basin operating well below typical mid-season norms.

Apishapa River near Fowler, CO — July 13: 0 cfs, with a falling trend. The Apishapa is a minor tributary of the Arkansas within Otero County. Zero flow at Fowler indicates the Apishapa is contributing nothing to the Arkansas mainstem at this time. This is not unusual for this stream in dry midsummer conditions, but it eliminates any supplemental inflow from this tributary.

Arkansas River at La Junta, CO (07123000): No recent flow data available. La Junta is the primary downstream indicator for Otero County and captures Arkansas River conditions after the major Fort Lyon Canal diversions upstream. The absence of current data is a significant intelligence gap — users should contact the USGS Colorado Water Science Center or check the USGS NWIS portal directly for the most recent available reading.

Arkansas River near Rocky Ford, CO (07120500): No recent flow data available. The Rocky Ford gauge captures flow specifically after Fort Lyon Canal Company diversions, making the Rocky Ford-to-La Junta comparison a valuable signal for estimating canal diversion volumes. With both gauges currently offline, that comparison cannot be made. Users relying on canal delivery scheduling should contact Fort Lyon Canal Company directly for current diversion and delivery status.

Bottom line: Active gauge data is severely limited this period. The Apishapa is at zero. The two most critical Arkansas mainstem indicators are not reporting. Direct contact with canal operators and the Colorado Division of Water Resources is recommended until gauge data is restored.

Seasonal Guidance

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Data Sources: SNOTEL data through July 12, 2026; USGS streamflow data through July 13, 2026

Data Current As Of: Colorado Division of Water Resources

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 — administers the Fryingpan-Arkansas Project and Pueblo Reservoir), Southeastern Colorado Water Conservancy District (SECWCD), and Colorado Division of Water Resources, Water Division 2 (Pueblo office) for regulatory decisions and water rights administration.