1. General information
Location and description of the intervention
City or FUA
Mobile (FUA)
Region
Northern America
Short description of the intervention
The Three Mile Creek Hydrological Restoration project is taking place in one historic channel of the Three Mile Creek, located east of Dr. Martin Luther King, Jr. Avenue, and covering approximately 1,800 linear feet (Ref 3). This project, led by the City of Mobile, aims to remove sediment from the stream channel. This segment of the Creek was bypassed with a straight channel in the early 1980s to control flooding in the area, thus accelerating the accumulation of sediments in the historic channel (Ref 1).
The project's goal is to restore and maintain the natural flow to the historic channel and create a connection to the City and County's Blueway initiatives (Ref 3). This will improve habitat conditions and water quality and help to protect the area’s estuarine and marine water resources (Ref 8). It will also contribute to revitalizing the Three Mile Creek Watershed and provide increased recreational opportunities for citizens, like kayaking and canoeing (Ref 6). Construction work occurred in 2022 and 2023 (Ref 3).
The Three Mile Creek Hydrological Restoration is a key component of the Mobile Bay Shore Habitat Conservation and Acquisition Initiative, which focuses on acquiring, restoring, and preserving habitats, including riparian, wetland, and upland areas that support various fish and wildlife species affected by the environmental disasters of the Deepwater Horizon oil spill that occurred in 2010 (Ref 1). The project spans three critical areas: 450 acres within the Three Mile Creek Watershed (as detailed in this project profile), 300 acres in the Dog River Watershed, and 40 acres of bay shore property in the Garrows Bend Watershed (with the latter two areas being part of separate initiatives) (Ref 4).
Implementation area characterization
Timeline of intervention
Start date of the intervention (planning process)
2021
Start date of intervention (implementation process)
2022
End date of the intervention
2024
Present stage of the intervention
Objectives of the intervention
Goals of the intervention
The project mostly focuses on restoring and maintaining the natural flow to the Three Mile Creek. Sub-goals of the project include:
- removal of sediment from the channel (Ref 1)
- enhancing its flood control capacity (Ref 1)
- returning and preserving natural flow (Ref 1)
- provide a linkage to the City and County Blueway efforts (Ref 1)
- improve habitat conditions (Ref 5)
- restore water quality (Ref 5)
- help to protect the area’s estuarine and marine water resources (Ref 5)
- provide increased recreational opportunities for citizens (Ref 5)
What types of restoration goals are / were defined for the NBS intervention?
Implementation activities and NBS focus
Implementation activities
- The project includes the sediment removal from the stream channel east of Dr. Martin Luther King, Jr Avenue (1,800 linear feet) to restore and preserve the natural water flow (Ref 1).
- Instream structures were planned to be constructed to reduce stream velocity/energy, protect existing sanitary sewer crossings, and increase natural habitat (Ref 1).
- Stabilize the bank and stream along Twelve Mile Creek (Ref 1).
- Dredging the historical creek (Ref 6) and dredging and restorating of Langan Park Lake (Ref 1).

"The Three Mile Creek Watershed Restoration project is separated into three phases:
Phase 1: Twelve Mile Creek Bank Stabilization University Blvd to Museum Drive (2022-2024)
Phase 2: Twelve Mile Creek Bank Stabilization East Drive to University Blvd (2023 - 2024)
Phase 3: Langan Lake Dredging (2023-2024)" (Ref 1).
NBS domain and interventions
Ecological domain(s) where the NBS intervention(s) is/are implemented
Blue infrastructure
Lakes/ponds
Rivers/streams/canals/estuaries
Coastlines
Amenities offered by the NBS
Design elements for well-being
Services
Expected ecosystem services delivered
Regulating services
Coastal protection
Flood regulation
Water purification / filtration
Habitat and supporting services
Habitats for species
Cultural services
Aesthetic appreciation
Recreation
Scale
Spatial scale
Micro-scale: District/neighbourhood level
Beneficiaries
Demographics in implementation area
Demographics in Fisher neighborhood in 2022 (Ref 7)
-population: 1,649
- median age male: 36.9 years
- median age female: 36.3 years
- average household size: 2.5 people
- median income range: $30,000 to $39,999
- poverty level: 43.7%
- ethnicity: Black: 77.1%, Some other race: 10.6%, White: 9.1%, Two or more races: 2.4%, Asian: 0.4%, Hispanic or Latino: 0.3%
Socio-economic profile of the area
Communities vulnerable to environmental hazards or climate change impacts
Unknown
Specify primary beneficiaries
- citizens of Mobile who will be able to enjoy the area (Ref 6)
- residents in the area (Ref 6)
Governance
Governance arrangements
Please specify the roles of the specific government and non-government actor groups involved in the initiative
Project Lead: City of Mobile
Partners: University of South Alabama, Mobile Bay National Estuary Program, MAWSS, The Village of Spring Hill, National Fish and Wildlife Foundation (NGO)
Supporting implementation: Moffatt & Nichol (private sector)
Fundings: Alabama Department of Conservation and Natural Resources, RESTORE Council (Ref. 1)
Key actors - initiating organization
Key actors - Other stakeholders involved (besides initiating actors)
Public sector institution
Non-government organisation/civil society
Researchers/university
Private sector/corporate actor/company
Participatory methods/forms of stakeholder involvement (all stakeholders)
Uncommon actors ("Missing actors")
Policy drivers
NBS intervention implemented in response to a Regional Directive/Strategy
Yes
Please specify the "Regional Directive/Strategy"
"This project was paid for [in part] with federal funding from the Department of the Treasury under the Resources and Ecosystems Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act)" (Ref. 1)
NBS intervention implemented in response to a national regulations/strategy/plan
Unknown
NBS intervention implemented in response to a local regulation/strategy/plan
Yes
Please specify the "local regulation/strategy/plan"
The Mobile Bay Shore Habitat Conservation and Acquisition Initiative (Ref 3, 4)
Relevant strategy or plan
Please specify other local relevant strategy
City specific blue space strategy or plan
Mandatory or voluntary intervention
Voluntary (spontaneous)
Enablers & Barriers
Please provide details (e.g, name of the plan or strategy) for the selected policies or initiatives.
The watershed project demonstrates governance innovation through its public-private partnership involving the City of Mobile, University of South Alabama, Mobile Bay National Estuary Program, MAWSS, The Village of Spring Hill, and the National Fish and Wildlife Foundation. It is a capacity-building project as it involves collaboration with various stakeholders, fostering knowledge sharing and capacity development. The project enablers include the financial support from the Alabama Department of Conservation and Natural Resources and the RESTORE Council, providing necessary resources for implementation.
"This project was paid for [in part] with federal funding from the Department of the Treasury under the Resources and Ecosystems Sustainability, Tourist Opportunities, and Revived Economies of the Gulf Coast States Act of 2012 (RESTORE Act)" (Ref. 1)
Barriers
unknown
Financing
Total cost
Please specify total cost (EUR)
Precise costs of the Three Mile Creek Hydrological Restoration project are unavailable.
But the project is part of Mobile Bay Shore Habitat Conservation and Acquisition Initiative, which has been funded through The National Fish and Wildlife Foundation's grant of $6,923,800 = 6 249 263,67 Euros (exchange rate on 30/08/2024: 1 USD = 0,902510 EUR) (Ref 5)
Non-financial contribution
Unknown
Co-finance for NBS
Yes
Co-governance arrangement
Entrepreneurship opportunities
Unknown
Business models
Business models
Please specify other Business model
Blue restoration project
Which of the involved actors was motivated by this model?
Impacts, benefits
Description of environmental benefits
-Improved water quality: "The project will improve water quality" (Ref 8)
-Increased protection against flooding: "significantly reduced flooding issues in the area." (Ref 1)
-Enhanced protection and restoration of coastal and marine ecosystems: "help to protect the area’s estuarine and marine water resources." (Ref 8)
-Enhanced protection and restoration of freshwater ecosystems: "help to protect the area’s estuarine and marine water resources." (Ref 8)
-Increased conservation or restoration of ecosystems: "Dredging the historical channel will improve water flow and habitat conditions" (Ref 6)
Environmental impact indicators
Total area of habitat restored (in ha)
unknown
Total area of protected or secured natural areas (in ha)
unknown
Area of river/lake or riparian area restored (in ha)
unknown
Water supplied or available from nature restoration (in m³ or L)
unknown
Water retention capacity (m³ or %)
unknown
Volume of stormwater treated (m³)
unknown
Description of economic benefits
- More sustainable tourism: the project will "provide increased recreational opportunities for citizens, like kayaking and canoeing. It will also contribute to our larger, collaborative effort to revitalize the Three Mile Creek Watershed." (Ref 6)
Economic impact indicators
Increase in property values or real estate prices in neighborhoods with improved access to green spaces & natural amenities (%)
unknown
Generation of income (in EUR)
unknown
Social and cultural impact indicators
Total area of recreational green space created or restored (in ha)
unknown
Description of social and cultural benefits
-Gain in activities for recreation and exercise: "provide increased recreational opportunities for citizens, like kayaking and canoeing." (Ref 6)
-Protection of historic and cultural landscape / infrastructure: "Our goal is to restore this historic waterway" (Ref 6)
Evidence for use of assessment
Presence of an assessment, evaluation and/or monitoring process
Unknown
Presence of indicators used in reporting
No evidence in public records
Presence of monitoring/evaluation reports
No evidence in public records
Availability of a web-based monitoring tool
No evidence in public records
Name of any specific impact assessment tools
unknown
Use of GIS in mapping impacts
No evidence in public records
Cost-benefit analysis
Unknown
Transparency
Justice
Community satisfaction
Description of locals satisfaction with the project
unknown
Trade-offs & Negative impacts
Measures to prevent gentrification or displacement
High-quality & Transformative NBS
Multiple impacts delivery (climate, biodiversity, just community)
No
Goal setting and impacts delivery
In the planning phase, the project aimed to address issues in all 3 key priority areas, but impacts were not delivered in all three key areas.
Long-term perspective
Yes
Cost-effective solutions
Unknown
Equitable impacts
Application of lessons learned
Perception of Environmental Change
Unknown
References
1.
map for mobile (n.d.). Projects Underway Three Mile Creek Hydrological Restoration. Mobile, Al: map for mobile, Accessed on August 30, 2024, [Source link] [Archive];
2.
Moffat and Nichol (n.d.). Priorities guide the Mobile Bay Shore Habitat Conservation and Acquisition Initiative, as a city implements restoration and conservation.. Mobile, Al: Moffat and Nichol, Accessed on August 30, 2024, [Source link] [Archive];
3.
NFWF (n.d.). Mobile Bay Shore Habitat Conservation and Acquisition Initiative- Phase II. Mobile, Al: NFWF, p. 1 Accessed on August 30, 2024, [Source link] [Archive];
4.
City of Mobile (n.d.). Contract presented to conserve the coast. Mobile, Al: City of Mobile, p. 1 Accessed on August 30, 2024, [Source link] [Archive];
5.
WPMI Web Staff (2017). City of Mobile awarded $6.9 million grant to conserve the coast. Mobile, Al: NBC News 15, p. 2 Accessed on August 30, 2024, [Source link] [Archive];
6.
Lane, K. (2023). City of Mobile begins dredging historic Three Mile Creek channel. Mobile, Al: NBC News 15, Accessed on August 30, 2024, [Source link] [Archive];
7.
City-Data.com (2022). Demographics Fisher. Mobile, Al: City-Data.com, Accessed on August 30, 2024, [Source link] [Archive];
8.
Hrvacevic, Z. (2023). Three Mile Creek dredging project underway Authorities & Government. Mobile, Al: Dedgingtoday.com, Accessed on August 30, 2024, [Source link] [Archive];
Comments and notes
Public Images
Image
Sattelite view of the historic channel of the Three Mile Creek that the project aims to dredge
Sattelite view of the historic channel of the Three Mile Creek that the project aims to dredge
https://mapformobile.org/3mchydrological/ accessed on 30/08/2024