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Flow in cubic feet per second (cfs) is an important factor in determining the concentration of a certain constituent. Spatial and temporal variations of a parameter can be affected by the amount of steam-flow at any particular moment. Data between sites and between time periods can be better understood when flow values are incorporated into parameter values. The USGS is responsible for monitoring established stream discharge gaging stations at key locations on watersheds throughout the country. A plot of the discharge rate or flow as a function of time is called a hydrograph. In the Roaring Fork Valley, there are five stream gages, which coincide with four of the Conservancy's sampling locations. These are at Difficult Campground, Emma, and the 7th Street Bridge on the Roaring Fork River, and at Baetis Bridge on the Fryingpan River.
Flow patterns in the Roaring fork watershed are fairly typical of natural mountain streams. Peak flows are evident during spring snowmelt months and low flows during fall and winter. Flow levels and patterns also play an important role in sustaining aquatic ecosystem functions. For example, adequate year-round in-stream flows are needed to protect aquatic habitat and organisms. Spring flushing flows replenish subsurface water sources, support riparian and floodplain vegetation, and establish various types of fish habitat. Water diversions and impoundments such as Ruedi Reservoir tend to temper this pattern in certain reaches.
Flow Rates for Local Rivers |
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Site managed by:
Roaring Fork Conservancy
P.O. Box 3349 | Basalt, Colorado 81621
Tel: (970) 927-1290 | info@roaringfork.org
© 2002-2008
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