Beaverhead TMDL Planning Area Sediment Contribution

for the Montana Department of Environmental Quality

We calculated the upland erosion sediment load for four different scenarios regarding upland and riparian health conditions.

INTRODUCTION

This project provided an upland source assessment for use in future TMDL development as specified under the U.S. Clean Water Act.

OUR MODEL

We modeled upland sediment loading due to hillslope erosion using the Universal Soil Loss Equation and predicted sediment delivery to the stream using a sediment delivery ratio. This model provided an assessment of both existing sediment loading from upland sources and potential sediment loading through the application of best management practices.

Next Project

Livingston South Assessment

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