Watershed Assessment of River Stability & Sediment Supply (WARSSS) Version 1.0 Contact Us | Print Version Search: EPA Home > Water > Wetlands, Oceans, & Watersheds > Watersheds > Tools > WARSSS

Excess sediment has been a leading cause of water quality impairment across the Nation for years, but methods to assess sediment problems and plan solutions have been limited. WARSSS is a technical procedure developed by Dr. David L. Rosgen for water quality scientists to use in evaluating streams and rivers impaired by excess sediment. This technical tools website includes: Basic Information Introduction to Sediment and River Stability Using WARSSS introduces three phases, step by step: RLA Reconnaissance Level Assessment RRISSC Rapid Resource Inventory for Sediment and Stability Consequence PLA Prediction Level Assessment Monitoring References Featured Items helps users find popular features such as: BEHI Bank Erosion Hazard Index The Rosgen Stream Classification tutorial List of Figures fully hot-linked to all charts and forms Glossary Case Studies Related Links portal to other sediment sites and tools Erosion causes many sediment problems in streams. WARSSS includes field methods, such as measuring changes in an unstable bank profile (above), that are used to calculate sediment loads affecting stream condition.