Surface Water Inflow Concentrations
In WY 2021, Total phosphorus concentrations in both Cherry Creek and Cottonwood Creek were lower than the 2011-2020 average. Phosphorus concentrations in Cottonwood Creek are 70% lower than concentrations in Cherry Creek.
In WY 2021, Total nitrogen concentrations in Cherry Creek were slightly higher than the 2011-2020 average but were similar to the 2011-2020 average in Cottonwood Creek. Nitrogen concentrations in Cherry Creek were 25% lower than concentrations in Cottonwood Creek.
Influent Summary Concentrations - Total Nitrogen
Influent Summary Concentrations - Total Phosphorus
Cherry Creek flows from south to north to the Reservoir through a 245,000-acre drainage basin. The basin includes various types of land use, including both agriculture and heavy development, as well as permitted discharges in and around Cherry Creek. Cottonwood Creek is the other major surface water input to Cherry Creek Reservoir. Land in the Cottonwood Creek watershed is more urbanized than the Cherry Creek watershed.
For more annual comparisons visit the WQ Update WQ Inflow Comparison Page.
Phosphorus Concentrations, CC-10 and CT-2
Nitrogen Concentrations, CC-10 and CT-2
Total Suspended Solids (TSS) Concentrations, CC-10 and CT-2
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