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Sterling Ranch rainwater‑harvesting pilot yields regional factors and design lessons; engineering and water‑court steps remain
Summary
A long‑running Sterling Ranch pilot used site monitoring and hydrologic analysis to produce regional factors for rainwater harvesting to pair with outdoor water‑efficiency practices; Dominion estimates ~119 acre‑feet at a Providence Park site and a project cost including pilot work of about $35,000 per acre‑foot.
State water staff and Sterling Ranch's water provider presented results from a multi‑year precipitation‑harvesting pilot and explained how the Colorado Water Conservation Board (CWCB) and Division of Water Resources developed regional factors to estimate historic natural depletion (evapotranspiration and infiltration) for a given soil group and storm depth.
Kevin Reedy (CWCB) and Sarah Buckor (Division of Water Resources) summarized how the pilot compiled field‑verified data (lysimeters, weather stations) and produced a statewide…
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