20220421 14010500 1.0 TRUE SGA Phase 2 Assessed Reaches The stream geomorphic assessment (SGA) is a physical assessment competed by geomorphologists to determine the condition and sensitivity of a stream. The Phase 2 SGA is the second phase of SGA data collection and is largely a field based data collection. The SGA Phase 2 Assessed Reaches indicates where the SGA Phase 2 has been completed in Vermont.