Bayou La Batre Watershed Management Planning

Transcription

1 Bayou La Batre Watershed Management Planning October 13, 2015

2 Project Team Environmental Health & Resiliency: Dewberry (Chris Warn) Culture & Heritage: PMCG (Mike Magnoli, PhD) Habitats: DISL (Just Cebrian, PhD) Eric Sparks, PhD Water Quality: ESA (Doug Robison) Shorelines: SCE (Bret Webb, PhD, PE) Access: Biohabitats (Ed Morgereth) 2 Bayou La Batre Steering Committee Meeting October 13,, 2015

3 WMP Overview Stakeholder Outreach & Engagement Watershed Characterization Regulatory Evaluation & Adaptation Prescription of Management Measures Implementation Activities Prioritize & Schedule Implementations Activities Long Term Financing Monitoring & Evaluation of Success Watershed Management Plan Development 3 Bayou La Batre Steering Committee Meeting October 13,, 2015

4 Stakeholder Outreach & Engagement Identified stakeholders Developed Steering Committee Databases generated for Community Outreach participants and Steering Committee members Developed both English and non-english versions of BLB WMP PowerPoint presentation Developed meeting agendas, survey instruments, and other support materials Identified issues based on public input Developed preliminary goals 4 Bayou La Batre Steering Committee Meeting October 13,, 2015

5 Stakeholder Outreach & Engagement Steering Committee Small Group Meetings Response Center Churches Cambodian community Vietnamese community Laotian community Other Meetings Community-wide outreach meeting Presentation to BLB City Council Presentation to Chamber of Commerce Met with agricultural community Met with BLB Utility Board Met with County Commissioners and State Representatives 5 Bayou La Batre Steering Committee Meeting October 13,, 2015

6 Culture & Heritage Challenges Diverse community Differing users (agriculture, fishing, aquaculture) Limited economic diversity (shipbuilding, seafood industry, agriculture) Community Concerns Health of bayou and Portersville Bay Sustainability of seafood industry Community awareness of issues Impacts from future development Preservation of natural and historic sites Actions WMP development Integrate with regional planning effort Increase community engagement Preliminary Goals Improve community vitality and connection to bayou 6 Bayou La Batre Steering Committee Meeting October 13,, 2015

7 Access Challenges Much of bayou privately owned City docks underutilized and in disrepair Differing users commercial fisherman vs. kayaks Differing pressure for highest and best use of public land Community Concerns Public access to bayou Safety of recreating in bayou More recreational opportunities WMP Actions Identify parcel ownership Identify areas for public access Identify connectivity opportunities Preliminary Goal Provide more public access and recreation opportunity for residents and tourists 7 Bayou La Batre Steering Committee Meeting October 13,, 2015

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11 Shorelines Challenges Dredged channel Steep banks with little transition Much of bayou privately owned Dilapidated city docks Community Concerns Navigable channel for industry Debris in upper bayou and flooding Safe harbor Actions - Assessing shorelines 35% armored, 65% natural 12.5 miles of tidally influenced shoreline today Tidally influenced shoreline may increase to 13.7 miles by 2050 due to relative sea level rise Tidally influenced shoreline may increase to 20.2 miles by 2100 due to relative sea level rise Most of areas along the bayou are susceptible to storm surge and waves due to relatively low land elevations Preliminary Goal Improve shoreline health and resiliency 11 Bayou La Batre Steering Committee Meeting October 13,, 2015

12 Shoreline Types 47% of shoreline is vegetated bank (43% low bank, 4% high bank) 35% of shoreline is armored (breakdown below) 13% of shoreline is organic (marsh) 5% of shoreline is sediment bank (sandy shoreline) Shoreline Protection a. 38% of armoring is rubble/riprap b. 34% of shore protection is loose oyster shell c. 27% of armoring is vertical bulkhead (steel, concrete, wood) d. 1% of armoring is trash revetment (random loose debris) Veg bank Armored Marsh Revetment (rubble/riprap) Bulkhead (steel) Random materials 12 Bayou La Batre Steering Committee Meeting October 13,, 2015

13 Environmental Health & Resiliency Challenges Much of city in floodplain Vulnerability to storm surge and localized flooding Community Concerns Debris in waterways Flooding Hurricanes Actions SLR & Vulnerability Assessment Hazard identification Critical facilities vulnerability assessment Demographic impacts SLAMM Modeling SLOSH Modeling Preliminary Goals Improve community resiliency 13 Bayou La Batre Steering Committee Meeting October 13,, 2015

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16 Environmental Health & Resiliency NOAA TNC UCF Sea Level Rise and Coastal Flooding Impacts Viewer Coastal Resilience Decision Support Tool Mapping Interface for Research Applications 16 Bayou La Batre Steering Committee Meeting October 13,, 2015

17 Water Quality Challenges Pathogens TMDL Limited data Existing reports are dated Community Concerns Fishable/swimmable water bodies Trash in waterways Pollution impacts on aquaculture and fisheries Actions Develop monitoring program Gain better understanding of watershed hydrology and water quality MST investigation for pathogens Preliminary Goals Improve water quality 17 Bayou La Batre Steering Committee Meeting October 13,, 2015

18 Habitats 18 Bayou La Batre Steering Committee Meeting October 13,, 2015

19 Bayou la Batre Watershed (HUC12) 19 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

20 Bayou la Batre Watershed (HUC12) Watershed divided into 3 areas: 20 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

21 Bayou la Batre Watershed (HUC12) Watershed divided into 3 areas: Upper All tributaries that feed the Bayou 21 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

22 Bayou la Batre Watershed (HUC12) Watershed divided into 3 areas: Upper All tributaries that feed the Bayou Mid Area of forested land containing Carl s Creek; connects the upper and lower watershed 22 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

23 Bayou la Batre Watershed (HUC12) Watershed divided into 3 areas: Upper All tributaries that feed the Bayou Mid Area of forested land containing Carl s Creek; connects the upper and lower watershed Lower The Bayou proper, lower sections of Carl s Creek and Little River 23 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

24 Watershed Sampling Stations Upper and Mid WS Stations Environmental Measurements Mid water column Water Samples Mid water column Water Flow Deployment of current meters at stations 8, 9, 10, and 11 Handheld flow measurements at all the rest. 24 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

25 Watershed Sampling Stations Lower WS Stations Environmental Depth Profiles - 1m intervals Water Samples - 1m below surface and above bottom Water Flow- Deployment of Current Meters at Stations 2, 3, and 5 25 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

26 Watershed Characterization Watershed Development Hydrodynamics Environmental Water Quality Flow Salinity Nutrients Questions: How much pollution? Where does it come from? Temperature Chlorophyll Light How does it move? Oxygen 26 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

27 Mid Watershed Forested Area Mid Watershed: Contains large forested area located to the north of the Bayou Sheet flow and ground water 27 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

28 marshes are filters of land-derived nutrient pollution denitrification plants and microbes marsh soil uptake fertilizer Release into the embayment

29 Mid Watershed Forested Area Mid Watershed: Contains large forested area located to the north of the Bayou creek Sheet flow and ground water Study Area 29 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

30 Mid Watershed Forested Area Mid WS Well Station Water Samples Extracted from installed porewater wells, hand grab from adjacent creek 30 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

31 Mid Watershed Forested Area 15-45cm 45-75cm 31 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

32 Mid Watershed Forested Area Mid WS Well Station Water Samples Extracted from installed porewater wells, hand grab from adjacent creek 32 Bayou La Batre WMP Steering Committee Meeting October 13, 2015

33 Let s keep the Bayou watershed beautiful and well managed! Thanks and questions? 33 Powerpoint title goes here Month Day, 2013

34 This project is supported wholly or in part by Mobile Bay National Estuary Program as part of a grant from National Fish and Wildlife Foundation Gulf Environmental Benefit Fund 34 Bayou La Batre Steering Committee Meeting October 13,, 2015