- Marina Management
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Redevelop Existing Sites
- Place new facilities in previously developed waterfront sites.
- Expand marinas into previously developed sites.
- Check with your local government for preferred redevelopment activities and locations.
Avoid Rare and Endangered Species
- Rare and endangered species may not be disturbed per the Federal & State Endangered Species Act/Legislation.
- Get a preliminary screening through you state agency that handles endangered species.
- If protected species are identified, you must implement an approved protection plan prior to project approval.
Avoid Submerged Aquatic Vegetation
- Avoid disturbing or shading SAV
- Avoid creating situations where secondary impacts on SAV by boat traffic (i.e. prop scarring or erosion from wakes) can occur.
Minimize Disturbance to Wetlands
- Avoid disturbance to wetlands and indigenous vegetation in riparian areas.
- Build open piled docks at a height minimizing shading impacts to marshes (build docks at least 1 foot in height above substrate for every 1 foot of dock width).
- Remove foreign materials (trash) from wetlands.
Avoid Shellfish Waters
- Avoid construction that results in the condemnation of shellfish waters. Many states have established policies that require creating buffer zones around boat mooring facilities within which shellfish cannot be harvested for direct marketing during certain months of the year.
- Do not site a marina near active shellfish harvesting or culturing areas.
Avoid Critical Migration, Nesting, and Spawning Areas for Location and Construction
- Disturbance of waterfowl staging areas by marinas and increased boat traffic should be avoided.
- Schedule construction to avoid critical migration, nesting, and spawning periods of important finfish, shellfish, and wildlife.
Consider Bottom Configuration
- Locate marinas on well-flushed, natural waterways; A continuous, gradual downward slope from the berthing area into deeper water is ideal.
- Avoid locating in canals (especially dead-end canals), irregular pockets, and sumps that are deeper than adjacent channels.
- Build docks in areas with water depths greater than 3 feet at mean low water.
Minimize Impervious Areas to Reduce Runoff
- Maintain areas with grass or gravel or other materials that let water percolate– where water and the pollutants (fertilizer, etc.) it picks up is filtered naturally before reaching the waters of your marina.
- Keep paved areas to an absolute minimum, i.e., just designate work areas and roadways for heavy equipment.
Use Upland and Inland Areas
- Upland and inland work areas should be far enough away from the water to allow for the natural filtering of pollutants.
- Locate buildings, workshops, and waste storage facilities in upland areas, away from fragile shoreside ecosystems, to the greatest extent possible. Upland areas also provide a measure of protection against floods.
- Locate parking and vessel storage areas away from the water, where feasible to reduce runoff.
- Consider inland areas for boat repair activities and winter storage. Use hydraulic trailers to quickly and easily move boats to inland storage locations.
Use Fixed or Floating Piers to Enhance Water Circulation
- Piers, and other structures should not inhibit water circulation.
- Select an open design for new or expanding marinas. Open marina designs have no fabricated or natural barriers to restrict the exchange of ambient water and water within the marina area.
- Install wave attenuators to reduce the force of incoming water, if protection is necessary.
- Design new or expanding marinas with as few segments as possible to promote circulation within the basin.
- Identify options to improve areas with poor water circulation.
Use Environmentally Neutral Material
- For new pilings and other structures that are in or above the water, use materials that will not leach hazardous chemicals into the water and which will not degrade in less than ten years time; i.e., reinforced concrete, coated steel, recycled plastic, plastic reinforced with fiberglass may be preferable.
- Avoid using wood treated with creosote for pilings and similar structures in or above the water
- Purchase floatable foams that have been coated or encapsulated in plastic or wood. As these floats age, degraded foam is contained by the covering.
Minimize the Need for Dredging
- Locate new marinas in areas where access can be obtained with a minimum of excavating, filling, and dredging.
- Existing marinas that require maintenance dredging more frequently than once every four years should investigate practicable options to increase circulation or reduce sediment accumulation.
- Extend piers and docks into naturally deep waters.
- Locate slips for deep draft boats in naturally deep waters.
- Dredge channels to follow the course of the natural channel.
- Co-locate entrance channels with natural channels.
- Avoid locating the entrance channel perpendicular to the natural channel as shoaling and, therefore, dredging is a potential problem.
- Where possible, establish two openings at opposite ends of the marina to promote flow-through currents.
- Provide dry storage for smaller boats.
Minimize the Impacts of Dredging
- Select an appropriate disposal site and containment design. The disposal site must have minimal impact on public safety, adjacent properties, and the environment.
- Do not dredge during critical migration or spawning periods of important species of finfish or shellfish.
- Avoid historic water bird nesting areas and waterfowl staging and concentration areas
- Use dredging methods, like hydraulic dredging, that minimize environmental impacts when large dredge volumes are involved.
- Use turbidity curtains to contain suspended sediments where appropriate.
Employ Nonstructural Shore Erosion Control Measures
Nonstructural measures, such as beach nourishment, marsh creation, and other methods that encourage the preservation of the natural environment, are the preferred methods of shore erosion control. If nonstructural measures alone are not sufficient to control erosion, use revetments, breakwaters, or groins to stabilize and ensure the long-term viability of the nonstructural controls