Brush Creek: Town Diversion to Eagle River

Current and Historical Drivers of Degradation

Extensive encroachment and modifications from past or present agricultural uses as well as recent residential development impact Brush Creek.

Summer baseflows in Aug/Sep of typical and dry years declined between 25-37% when compared to natural historic conditions. High peak flow frequency (the frequency of years with peaks above the natural flow 4-yr recurrence) declined profoundly (> 50%). Agricultural and municipal water uses decrease annual flow volumes by 25% during dry years.

Ambient nutrient concentrations do not exceed standards but approach them by exceeding 50% of the standard threshold or having maximum observed concentrations that are above the threshold.

Report Card