SEDSPECSediment and Erosion Design

and SPECification Tool http://pasture.ecn.purdue.edu/~sedspec

Dr. M. Sharifm-sharif@cecer.army.mil

USACERL(800) 872-2375 ext. 6416

Dr. Bernie Engel, Purdue University

engelb@purdue.edu

SedSpec Introduction• SedSpec (a WWW-based tool) provides the

necessary calculations to provide approximate sizes and costs of hydrologic and erosion control structures• Channels (grassed, open, riprap, concrete)• Culverts• Sediment basins• Terraces• Runoff diversions• Storm water detention basins

SedSpec Introduction

• SedSpec utilizes TR 55 or the Rational Method to compute peak rates of runoff.

• Database holds rainfall depths

• User provides data in a web form

SedSpec BMP Introduction

• Provides information about construction and maintenance

• Experience reports

Rational Method

• Estimates peak rate of runoff

• Simple, widely used

• Requires land use, soil, flow length, slope

SedSpec