Iron County Water Intelligence Brief

June 15, 2026 | Cedar-Parowan Closed Basin

Situation Summary

Iron County's water story in 2026 is defined by what it always is: a closed-basin groundwater dependency in two structurally overdrafted valleys, where seasonal snowmelt on the Markagunt Plateau provides recharge signals but cannot resolve decades of cumulative aquifer decline. All six SNOTEL stations monitoring the Markagunt Plateau and surrounding highlands have reached zero snow water equivalent, with the 2026 snowpack melting out approximately 4–6 weeks ahead of the historical median meltout date — compressing the recharge window that both Cedar Valley and Parowan Valley aquifers depend on. Reservoir storage data and 7-day forecast details are available in the full brief.

Snowpack Conditions

All six SNOTEL stations serving the Iron County closed basin are reporting zero snow water equivalent and zero snow depth as of June 14, 2026 — a condition that is normal for mid-June at these elevations, as median SWE for this date is also 0.0" across all stations. The meaningful story for 2026 is not today's reading but the timing of meltout: the snowpack melted out approximately 4–6 weeks ahead of the historical median meltout date across the region, driven by an anomalous March heat wave.

Station readings (June 14, 2026):

Brian Head is the primary recharge-season indicator for both Cedar Valley and Parowan Valley aquifers — snowmelt from the Markagunt Plateau is the dominant natural recharge source for both basins. An early meltout means the spring recharge pulse arrived earlier than normal and has already passed. For Parowan Valley irrigators and Cedar City water managers alike, this narrows the window during which natural aquifer replenishment occurs — though it is critical to understand that even a full, timely snowpack season cannot resolve the structural overdraft that characterizes both valleys. Aquifer levels in Cedar Valley and Parowan Valley have been declining persistently for decades; seasonal recharge provides incremental relief, not a reset.

Streamflow Conditions

Coal Creek Near Cedar City (USGS 10242000): 13 cfs as of June 15, 2026 (stable)

Coal Creek is the only active USGS streamflow gauge in Iron County, and its readings should be understood as a recharge-season indicator for Cedar Valley — not as a primary irrigation supply volume. With a drainage area of approximately 80.9 square miles and an average annual volume that is small by Mountain West standards, Coal Creek does not represent meaningful direct diversion supply for agricultural operations. At 13 cfs stable, the creek is reflecting the tail end of the early-melt snowmelt pulse. Flows are likely to decline through July as the Markagunt Plateau dries down.

Parowan Valley monitoring gap: No active USGS gauge exists on Parowan Creek or Center Creek in the Parowan Valley (HUC 16030001). This is a meaningful data gap for the primary agricultural community in Iron County. Parowan Valley irrigators cannot rely on public streamflow data to assess local surface water conditions — contact Utah Division of Water Rights for any local stream monitoring data, and rely on groundwater management plan reporting and well monitoring as the primary supply indicators.

Iron County is a closed basin with no surface water outlet. Coal Creek terminates in a dry lake and playa in Cedar Valley; Parowan Creek terminates at the Little Salt Lake and adjacent playa in Parowan Valley. There is no surface water connection to the Sevier River, Virgin River, Colorado River, or any other regional system. Water that falls here, stays here — or is consumed here.

Seasonal Guidance

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

Data Sources: SNOTEL data through June 14, 2026; USGS streamflow data through June 15, 2026

Data Current As Of: June 15, 2026

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, Utah Division of Water Rights (State Engineer — issues and administers groundwater management plans for Cedar Valley and Parowan Valley aquifers; the governing documents for long-term aquifer protection; waterrights.utah.gov), Iron County Water Conservancy District, Cedar City Water Department, and local irrigation companies serving Parowan Valley agricultural users for regulatory decisions and water rights administration.