The East Fork of the Little Bear River is the upper catchment sub watershed of the Little Bear River. The HUC10 is 1601020301 and the sub-watersheds include 160102030101 & 160102030104. This area is located in Northern Utah, but more specifically in the Southern extent of Cache Valley (Figure 1 & 2). This watershed drains to the Great Salt Lake, which is considered a closed basin, since there is no outlet point.
Figure 1: Location Map of Little Bear River Watershed
Figure 2: East Fork Little Bear River Map
The climate of this watershed consists of a range of precipitations from 0.43 - 1.35 m. This is primarily determined by elevation, so in the valley there is less precipitation than on the peaks of mountains. The mean temperatures range from 42 - 46 degrees Fahrenheit. This like precipitation is largely dependent on elevation, in general the valley is warmer than the mountains. The flow regime of this river is a perennial stream that has been heavily modified by humans. There is a large dam that was constructed in 1964 which created Porcupine Reservoir, this dam can be seen as a knickpoint in the longitudinal profile (Figure 3).
Figure 3: Longitudinal Profile of East Fork Little Bear River
The US EPA Ecoregions are mainly composed of Northwestern Forested Mountains with a small portion of the valley mapped as North American Desert (Figure 4).
Figure 4: Ecoregion of East Fork Little Bear Watershed
The dominant vegetation type of the river corridor is open-tree canopy in the upper portions of the catchment and is grassland in the valley. There is also a mix of closed-tree canopy and shrubs in the surrounding hillsides (Figure 5).
Figure 5: Vegetation class of East Fork Little Bear River
The catchment morphometrics include a mainstem length of 20.5 miles, a drainage area of 5127 square kilometers, and a length of
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