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    Conclusions:

    The main use of land in the Turtle Watershed is for farming and agriculture. Runoff from the watershed is primarily from Turtle Creek. This creek is roughly in the middle of the watershed and has the largest drainage area of the smaller subwatersheds. Erosion from the watershed can be found using the erosion factors shown in the results table. Knowing the erosion factor and the soil type, the Universal Soil Loss Equation can be used to determine the amount of erosion in tons/yr/ac. The soil was also determined to be very clayey and having a slow permeability with an average of around 0.6in/hr. The driving force for runoff and erosion is the precipitation for the area. Land use, permeability, k factors and organic materials, wind and dry weather conditions also cause erosion. In conclusion, the Turtle Watershed is made up of highly erosive soil. This erosion causes large annual soil loss each year and causes high sedimentation in the streams and lakes.

    The highest average rainfall may be anywhere from 2in-3in. This amount is seen primarily in May and June.  The highest average snowfall, of roughly 6in, is seen January – March. Table 3. shows that the city of Redfield sees about 20 inches of rain per year and about 30 inches per year in snowfall. Peak runoff tends to occur in the months April through July depending on the temperature and snowfall. Wet and dry season in the area tend to cause varied flows year round for the Turtle Watershed.

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