Breewood Stream Restoration Montgomery County Capital Improvement Project to Stabilize the Breewood Tributary November 14, 2012 Sligo Middle School

Introductions Doug Marshall Watershed Planner, Montgomery County Department of Environmental Protection (MCDEP) Jean Kapusnick Jean Kapusnick Watershed Restoration Engineer, MCDEP Mike Thompson Mike Thompson Project Consultant, Biohabitats Doug Streaker Doug Streaker Project Engineer, Biohabitats 2November 14, 2012

Project Background Project Background Project Goals Project Goals Existing Conditions Existing Conditions Proposed Conditions Proposed Conditions Example Projects Example Projects Restoration Monitoring Restoration Monitoring Schedule Schedule Questions QuestionsOutline 3November 14, 2012

Breewood Tributary (DA=57 ac, impervious cover=45%) Breewood Tributary (DA=57 ac, impervious cover=45%) County’s National Pollutant Discharge Elimination System (NPDES) monitoring watershed County’s National Pollutant Discharge Elimination System (NPDES) monitoring watershed Concentrated watershed effort Concentrated watershed effort Large sediment input to Sligo Creek Large sediment input to Sligo Creek Exposed infrastructure Exposed infrastructure Project Background 4November 14, 2012

Project Background - Location 5November 14, 2012

6 6 Land use changes in a watershed and along a stream corridor system, such as an increase in paved area, can results in impacts to stream structure and function. Project Background - Need November 14, 2012

7 7 Ecological restoration Ecological restoration  process of assisting the recovery of an ecosystem that has been degraded, damaged, or destroyed Stream restoration Stream restoration  threat to infrastructure  unable to ecologically recover from a degradation Habitat improvement Habitat improvement  Create diverse biological communities Project Goals November 14, 2012

8 8 Improve water quality Improve water quality Improve aquatic and terrestrial habitat Improve aquatic and terrestrial habitat Reduce stream channel bank and bed erosion Reduce stream channel bank and bed erosion Eliminate hazards to those who recreate near the stream Eliminate hazards to those who recreate near the stream Protect infrastructure and utilities Protect infrastructure and utilities Reconnect stream to floodplain Reconnect stream to floodplain Enhance riparian forest Enhance riparian forest Increase habitat diversity Increase habitat diversity Improve ground water recharge Improve ground water recharge Stormdrain outfall improvement Stormdrain outfall improvement Goals of Stream Restoration November 14, 2012

Existing Conditions 9November 14, 2012

10 Habitat enhancement Habitat enhancement  riffle/pool complex  riparian cover – shading and avian habitat  diverse and native plant communities, floodplain forested wetlands Stabilization channel bed and banks Stabilization channel bed and banks  raising channel invert and minimize bank erosion  protect Infrastructure  Reduce maintenance to outfalls and channel Increase Floodplain function Increase Floodplain function  reconnecting to floodplain Public engagement, education, and participation Public engagement, education, and participation Proposed Conditions - Approach November 14, 2012

Proposed Conditions 11November 14, 2012 Image of first rendering goes here

Proposed Conditions 12November 14, 2012 Image of second rendering goes here

Elevated stream bed – floodplain connection Elevated stream bed – floodplain connection Safe conveyance of large storm events Safe conveyance of large storm events Diverse habitat Diverse habitat Reduced sediment losses to Sligo Creek Reduced sediment losses to Sligo Creek No more canyon No more canyon Proposed Conditions 13November 14, 2012

Example Projects 14November 14, 2012

15 Restoration During Construction November 14, 2012

16 Restoration After Construction November 14, 2012

17 Restoration After Construction November 14, 2012

18 November 14, 2012 Stream Stability Stream Stability Bank Erosion Bank Erosion Aquatic insects Aquatic insects Fish Fish Vegetation Vegetation Restoration Monitoring

19 Site Survey Site Survey Natural Resources Inventory and Forest Stand Delineation – under review Natural Resources Inventory and Forest Stand Delineation – under review Forest Conservation Plan – under development Forest Conservation Plan – under development 60% design – draft, seeking input 60% design – draft, seeking input Schedule - Work Completed To Date November 14, 2012

20 Public Meeting – November 14, 2012 Public Meeting – November 14, % Design and apply for permitting – December % Design and apply for permitting – December 2012 Final Design – April 2014 Final Design – April 2014 Construction – October 2014 Construction – October 2014Schedule November 14, 2012

21 Questions? November 14, 2012

22  Non-Biting Midge  Diving Beetle  Damselfly Larvae  Backswimmers  Water Scorpion  Dragonfly Nymph  Phantom Midge  Water Strider  Swallows, Adult Dragonflies, Frogs Background-Mosquito Predators November 14, 2012