Stream Restoration in the 51st State* *Subject to Congressional & Presidential Approval Our Biggest Foe! Stream Problems Large Sediment Load Trash Bank Erosion Infrastructure Habitat Loss @DOEE_DC Key Goals 1. Prevent Erosion 2. Improve Water Quality 3. Enhance In-Stream & Riparian Habitat 4. Protect Infrastructure 5. Flood Mitigation How Can We Best Manage Stormwater? 1. Capture it! 2. Infiltrate it! 3. Spread it out! 4. Put it to work! Restoration Step-by-Step Designs & Monitoring Construction Site Selection Construction Monitoring & Enjoy! @DOEE_DC Restoration Techniques 1. Natural Channel Design 2. Floodplain Reconnection/Legacy Sediment Removal (bring the floodplain down) 3. Regenerative Stream Design (raise the channel up) Key Goals Completed Anacostia Watershed Stream Restoration Projects 1.Watts Branch 2.Nash Run 3.Pope Branch (DCWater) 4.Springhouse Run 5.Alger Park Nash Run - Before Nash Run – During Nash Run - After Nash Run Alger Park - Before Alger Park - During Alger Park - After Alger Park Upland Stormwater Management Pre/Post-Restoration Monitoring Restoration Monitoring • Geomorphic Springhouse Run Fish (2014-2019) •Cross Sections & Longitudinal Profiles; Bank Stability • Flow/Discharge • Water Quality •Temperature, DO, pH, turbidity, ammonia • Vegetation • Macroinvertebrate s • Fish • Photo Watts Branch RSAT Successes 1. 20,000 feet of stream restored 2. 300lbs/yr of TN, 2720lbs/yr of TP, & 605,200lbs/yr of TSS 3. Restored Native Vegetation 4. Private and Public Space LID Projects 5. Improved Fish Passage Corridors 6. Recreational Stream Corridors Upcoming Stream Projects • Branch Ave. Park (2020) • Park Drive Gullies (2021)* • Fort Dupont (2022)* • Stickfoot Branch (2022)* • Rock Creek Gullies (2022) • Oxon Run (2025) • Pinehurst (2025) *Anacostia Watershed Josh Burch Environmental Protection Specialist Watershed Protection Division 202.734.9527 [email protected].