Regional Ecosystem Strategies: Region 4

Restore/Sustain Wetlands
1 Operate locks to evacuate excess water from Mermentau Lakes Sub-basin
2 Operate existing Calcasieu Lock specifically to evacuate excess water with a new lock on a parallel channel specifically for navigation
3 Manage watershed to reduce rapid inflows into the Mermentau Lakes Sub-basin
4 Move water N to S across Hwy 82 w/ associated drainage south of Hwy 82
5 Restore the connection of the original Mermentau River to the Gulf of Mexico and constrict the width and depth of the Mermentau Ship Channel to authorized dimensions
5a Dedicated delivery of sediment for creation of marsh
6 Maintain Atchafalaya water and sediment inflow through the GIWW and stabilize banks for water conveyance and erosion control.
Salinity Control in Calcasieu/Sabine Basin
7 Salinity control of Calcasieu Ship Channel between Gulf and Calcasieu Lake by installing a gate or lock or other saltwater barrier
8 Maintain Sabine river inflows. Potential adverse effects of Trans-Texas Water Plan on area wetlands should be avoided or mitigated.
9 Salinity control of Sabine River and Sabine Lake
9a. Salinity control on east shoreline of Sabine Lake--near-term
9b. Salinity control in the GIWW east of Sabine River--near-term
9c. Salinity control of Sabine Lake at the Causeway--near term
9d. Salinity control of Sabine River between Gulf and Sabine Lake - long term
Protect Bay/Lake Shoreline
10 Stabilize Grand and White Lakes shorelines
Restore/Maintain Barrier Islands and Shorelines
11 Stabilize Gulf shoreline in the vicinity of Rockefeller Refuge
12 Stabilize Gulf shoreline from Calcasieu Pass to Johnson's Bayou
13 Maintain Atchafalaya sediment stream in the Gulf
14 Restore long-shore sediment flow across the mouth of Calcasieu Pass
15 Restore long-shore sediment flow across the mouth of the Mermentau Ship Channel
Maintain Critical Landforms
16 Prevent the coalescence of Grand and White Lakes
17 Prevent the coalescence of Grand Lake and GIWW
All Mapping Unit Strategies - Region 4
MERMENTAU BASIN
AMOCO
1 Protect Shorelines
e.g. Bank stabilization along the GIWW where necessary
e.g. Maintain integrity along White Lake (to include possible use of fly ash)
BIG BURN
2 Improve Hydrology
e.g. Hydrologic Restoration at Humble Canal and the GIWW; Freshwater introduction from the GIWW into the Big Burn
3 Protect Shorelines
e.g. Bank stabilization along the GIWW where necessary
4 Terracing/Vegetative Plantings
BIG MARSH
5 Improve Hydrology
e.g. Maintain the CWPPRA Freshwater Bayou (ME-04) hydrologic restoration and bank protection project.
CAMERON PRAIRIE
6 Protect Shorelines
e.g. Bank stabilization along the GIWW where necessary
GRAND CHENIER RIDGE
7 Maintain Ridge Function
e.g. Maintain Grand Cheniere Ridge
GRAND LAKE
8 Protect Shorelines
e.g. Maintain Spoil Banks along the GIWW where necessary
9 Manage as a Low Salinity, Fresh to Intermediate Ecosystem
e.g. Protect the freshwater supply to rice/crawfish farms and fresh marshes from salt-water intrusion.
10 Protect Wetland Diversity
GRAND LAKE EAST
11 Protect Shorelines
e.g. GIWW shore stabilization
e.g. Shore stabilization in Umbrella Bay
12 Terracing/Vegetative Plantings
e.g. Vegetative plantings in Mallard Bay
e.g. Build terraces at Bird Island between Mallard Bay and Grand Lake
GRAND/WHITE LAKE LAND BRIDGE
13 Dedicated Dredging
e.g. Dedicated dredging from Grand and/or White Lakes to the land bridge
14 Improve Hydrology
e.g. Structures/hydrologic management at the Old GIWW
15 Terracing/Vegetative Plantings
e.g. Terracing and plantings associated with terracing
16 Protect Shorelines
HOG BAYOU
17 Improve Hydrology
e.g. Move sediment rich water from Mermentau River into Hog Bayou; Moderate salinities (3 alternatives): (a) Freshwater & sediment introduction from north to south of Hwy 82 from Lakes Sub-basin; (b) Move fresh water and sediment from the Mermentau into Hog Bayou, (c) Possible structure in Hog Bayou. Insure ingress/egress of marine organisms
LACASSINE
17 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material along the GIWW
18 Protect Shorelines
e.g. Stabilize the GIWW banks where needed
e.g. Maintain Lacassine Bayou shoreline
LITTLE PECAN
19 Freshwater Introduction
e.g. Divert fresh water from Grand L. to Little Pecan Bayou to reduce salt water intrusion; Bring water from the Superior Canal to the Little Pecan Bayou area to the W. Insure ingress/egress of marine organisms
20 Improve Hydrology
e.g. Moderate salinities in Little Pecan Bayou by one or more of 3 alternatives: (a) bring fresh water from the Superior Canal, (b) divert fresh water from Grand Lake, or (3) salt water reduction structure in Little Pecan Bayou; Hydrologic restoration in the North Little Pecan Bayou area (e.g. XME--46). Insure ingress/egress of marine organisms
21 Protect Shorelines
e.g. Vegetative plantings on Little Pecan Lake shore
e.g. Maintain and restore Little Pecan Lake shorelines
LITTLE PRAIRIE
22 Beneficial Use of Dredged Material
e.g. Beneficial use of GIWW dredged material: also for protection from salt water intrusion during storms
e.g. Beneficial use of dredged material to prevent locks from being by-passed during storms.
23 Freshwater Introduction
e.g. Maintain freshwater inflows from the GIWW and Vermilion River to the west; Maintain fresh water inflow through the marshes
LOCUST ISLAND
24 Beneficial Use of Dredged Material
e.g. Beneficial use of GIWW & Freshwater Bayou dredged material to include prevention of saltwater intrusion during high water events around locks and prevention of erosion from tidal fluctuations
25 Freshwater Introduction
e.g. Maintain freshwater and sediment inflow from the Vermilion R. through the GIWW and Freshwater Bayou Canal to protect fresh marshes south of the GIWW; Maintain fresh water and sediment inflows from the GIWW to the west
26 Protect Shorelines
e.g. Rebuild W. bank along Freshwater Bayou Canal and south bank of GIWW
LOWER MUD LAKE
27 Beneficial Use of Dredged Material
e.g. Beneficial use of Mermentau River spoil for Gulf shore protection
28 Maintain Ridge Function
e.g. Maintain the Hackberry Ridge function
29 Shoreline Stabilization
e.g. Stabilize Gulf shore
MIDDLE MARSH
30 Herbivory Control
31 Improve Hydrology
e.g. Improve drainage to relieve impoundment
NORTH GRAND LAKE
32 Protect Shorelines
e.g. Bank stabilization of GIWW
e.g. Vegetative plantings for shoreline stabilization
33 Improve Hydrology
e.g. Restrict Mermentau River at its confluence with Grand Lake and the GIWW
NORTH WHITE LAKE
34 Protect Shorelines
e.g. Bank stabilization on the GIWW
e.g. Vegetative plantings where feasible
e.g. Pump historic beach sand to restore the current White Lake north shore
OAK GROVE
35 Maintain Ridge Function
e.g. Maintain Grand Chenier function
SOUTH PECAN ISLAND
36 Dedicated Dredging
e.g. Dredge fill in open water areas with either White Lake or Gulf spoil
37 Shoreline Protection to prevent coalescence of White Lake and the Gulf
e.g. Maintain integrity of Gulf shoreline where needed
38 Terracing/ Vegetative Plantings
e.g. Terracing and plantings along northern boundary of unit
SOUTH WHITE LAKE
39 Protect Shorelines
e.g. Pump historic sand beach to restore the current White Lake south shore
CALCASIEU/ SABINE BASIN
BIG LAKE
40 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from the GIWW and Calcasieu Ship Channel to the Big Lake Unit shallow open water areas.
41 Improve Hydrology
e.g. Hydrologic restoration south of Big Lake (CS-10) to complete perimeter control along the East shoreline of Calcasieu Lake
BLACK BAYOU
42 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from the Sabine R.
43 Freshwater Introduction
e.g. Freshwater inflows from Sabine River to include a siphon from the Sabine Canal and the Vinton Drainage Ditch into Black Bayou
44 Improve Hydrology
e.g. Hydrologic restoration through the NRCS watershed project and maintenance of the CWPPRA Black Bayou Project through the year 2050
BLACK LAKE
45 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from the GIWW and ship channel
46 Improve Hydrology
e.g. Install a saltwater intrusion moderating structure at the Alkali Ditch; Maintain CS-09 Brown's Lake project; Maintain existing hydrologic restoration projects; Close structure under Shell Western Road near Black Lake Mgt. Area; Hydrologic restoration at Kelso Bayou
47 Shoreline Stabilization
e.g. Re-establishment of Black Lake shoreline boundaries
48 Terracing/Vegetative Plantings
BROWN'S LAKE
49 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material in shallow open water areas (e.g. Sabine Marsh Creation)
50 Improve Hydrology
e.g. Implement the North Line Canal structure; Maintain Sabine NWR Hydrologic Restoration control structures through the year 2050
51 Terracing/Vegetative Plantings
CALCASIEU LAKE
52 Beneficial Use of Dredged Material
e.g. Maintain and enhance islands (i.e. Rabbits Is.) with beneficial use
53 Protect Shorelines
e.g. Continuous armored bank along Ship Channel. Decrease height of ship channel spoil to near marsh level lakeward of channel and fortify channel shoreline.
CAMERON
54 Improve Hydrology
e.g. Maintain existing wetland management plan at Rutherford Beach
55 Maintain Drainage Infrastructure
e.g. Maintain drainage infrastructure within the Cameron fastland
56 Maintain Ridge Function
57 Terracing/Vegetative Plantings
e.g. Terracing may be feasible in eastern portion of unit
CAMERON CREOLE WATERSHED
58 Beneficial Use of Dredged Material
e.g. Beneficial Use of Dredged material from the GIWW
59 Terracing/Vegetative Plantings
e.g. Vegetative plantings, terraces, submerged aquatic vegetation plantings within the watershed
CHOUPIQUE ISLAND
60 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from the GIWW and the Calcasieu River
61 Maintain Perched Marshes
e.g. Maintain perched marshes on Choupique Island
CLEAR MARAIS
62 Improve Hydrology
e.g. Address hydrologic problems between Choupique Bayou & Brannan's Ditch
63 Shoreline Stabilization
e.g. Maintain and extend Clear Marais shoreline stabilization project
EAST JOHNSON'S BAYOU
64 Herbivory Control
65 Improve Hydrology
e.g. Restore hydrologic barriers in Deep Bayou; Hydrologic Restoration in Burton-Sutton Canal
HACKBERRY RIDGE
66 Improve Hydrology
e.g. Maintain the Rycade Canal structure
67 Shoreline Stabilization
e.g. Curtail ship channel erosion along west bank of ship channel
HOG ISLAND GULLY
68 Beneficial Use of Dredged Material
e.g. Stabilize the marsh E of Hwy 27 to protect Hwy.
e.g. Beneficial use of dredged material to rebuild marsh
69 Terracing/Vegetative Plantings
e.g. Maintain and expand terracing in shallow water areas of the unit E. of Hwy 27
JOHNSON'S BAYOU RIDGE
70 Maintain Ridge Function
e.g. Maintain Chenier Ridge natural habitat (for neo-tropical migrant birds)
71 Shoreline Stabilization
e.g. Sacrificial (feeder ) berm just west of Constance Beach breakwaters
MUD LAKE
72 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from Calcasieu Ship Channel
73 Improve Hydrology
e.g. Manage hydrology outside of East Mud Lake project area (Oyster Bayou Project)
74 Protect Shorelines
e.g. Shoreline protection along Refuge boundary
PERRY RIDGE
75 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from the GIWW and Sabine River
76 Shoreline Stabilization
e.g. Stabilize the remainder of GIWW North bank from Perry Ridge to the Sabine River
SABINE LAKE
77 Beneficial Use of Dredged Material
e.g. Beneficial use for island maintenance (Sabine Island)
SABINE LAKE RIDGE
78 Beneficial Use of Dredged Material
e.g. Beneficial use of dredged material from Sabine Ship Channel
79 Improve Hydrology
e.g. Restore hydrologic barriers by plugging canals; Hydrologic Restoration at Lighthouse Bayou (maintain fisheries access)
80 Protect Shorelines
e.g. Sabine lake shoreline protection, shore protection along Gulf E of Sabine jetty
SABINE POOL #3
81 Improve Hydrology
e.g. Marsh management to lower water levels; Structures in N and S (central) Canals to restore hydrology
82 Improve Water Quality
e.g. Reduce turbidity in unit with wave breaks
83 Terracing/Vegetative Plantings
e.g. Wave break levees (terracing in SE open water)
SECOND BAYOU
84 Herbivory Control
85 Improve Hydrology
e.g. Restore natural hydrology by improving water flow in the unit
SOUTHEAST SABINE
86 Improve Hydrology
e.g. Hydrologic Restoration Structures in Central Canal to restore hydrology; Hydrologic Restoration in the Burton-Sutton Canal
87 Terracing/Vegetative Plantings
SW GUM COVE
88 Improve Hydrology
e.g. Hydrologic Restoration at the Northline Canal & Bancroft Canal; Implement and maintain the NRCS and CWPPRA Black Bayou (XCS-48) projects; Maintain North levee of Northline Canal to maintain the hydrology of Starks Canal
SWEET/WILLOW LAKE
89 Beneficial use of Dredged Material
e.g. beneficial use of GIWW material
90 Improve Hydrology
e.g. Restore the west bank of the Unical Canal; Place levee (or breakwater fence, Christmas tree fence) west of salt burn
91 Protect Shorelines
e.g. stabilize remainder of GIWW to Gibbstown Bridge
92 Terracing/Vegetative Plantings
WEST BLACK LAKE
93 Beneficial Use of Dredged Material
94 Protect Shorelines
e.g. erosion control along GIWW where needed
e.g. erosion control along W. Black Lake shoreline
95 Terracing/Vegetative Plantings
WEST COVE
96 Vegetative Plantings
e.g. plantings in the NE region of unit
WEST JOHNSON'S BAYOU
97 Beneficial Use of Dredged Material
e.g. beneficial use of dredged material from the Sabine Ship Channel
98 Improve Hydrology
e.g. Hydrologic Restoration by plugging canals
99 Protect Shorelines
e.g. Sabine lake shoreline protection
WILLOW BAYOU
100 Beneficial Use of Dredged Material
e.g. dredge-filling/beneficial use of Sabine-Neches Channel material
101 Improve Hydrology
e.g. Maintain fresh water inflows from the Sabine River; Manage Gray's Canal in similar manner to Cameron-Creole Watershed management; Contingency Plan for the TTWP; Restore hydrology by plugging Willow Bayou Canal & Gray's Ditch; Hydrologic restoration in the Burton-Sutton Canal
102 Protect Shorelines
e.g. Maintain integrity of the Sabine Lake shoreline
103 Terracing/Vegetative Plantings
Programmatic Recommendations
1 Restore/Sustain Wetlands - REGIONAL STRATEGY
Provide source of freshwater to upper Mermentau basin during drought
GRAND CHENIER RIDGE
2 Restrict Sand Dredging
e.g. Restrict sand dredging of Grand Chenier
WHITE LAKE
3 Allow for Limited Estuarine Organism Access
e.g. Allow for limited estuarine access into the lake at the Schooner Bayou, Leland Bowman, and Catfish Locks.
4 Maintain Lake as a Low Salinity Fresh to Intermediate Ecosystem
e.g. Protect the rice/crawfish farms and fresh marshes from salt water intrusion. Protect wetland diversity.
e.g. Maintain the marshes surrounding the lake as very low salinity fresh to intermediate marsh habitats.
5 Maintain Lake's Sub-basin Target Water Level
e.g. Achieve the 2 ft MLG water level targets in the Lakes Sub-basin. At 3 ft MLG go to emergency drainage at structures.
6 Monitor fisheries access at the locks
LITTLE PRAIRIE
7 Navigation Safety
e.g. Straighten the "Wiggles" in the GIWW for navigation safety, wildlife and fisheries
GRAND LAKE
8 Maintain Lake as a Low Salinity, Fresh to Intermediate Ecosystem
e.g. Protect the fresh water supply to rice/crawfish farms and fresh marshes from salt water intrusion. Protect wetland diversity.
e.g. Maintain the marshes surrounding the lake as very low salinity, fresh to intermediate marsh habitats.
e.g. Pump freshwater into the Mermentau River from the Atchafalaya River, especially during droughts (i.e., the Teche-Vermilion Project)
9 Maintain Lake's Sub-basin Target Water Level
e.g. Achieve the 2 ft MLG water level targets in the Lakes Sub-basin. At 3 ft MLG go to emergency drainage at structures.
10 Allow for Limited Estuarine Organism Access
e.g. Allow for limited estuarine access into Grand Lake at Catfish Lock
11 Monitor fisheries access at the locks
BLACK BAYOU
12 Contingency Plan for Trans Texas Water Plan, Structure in Black Bayou
CALCASIEU LAKE
13 Allow for Estuarine Organism Access to Surrounding Marshes
e.g. Allow for estuarine fisheries access to adjacent lake marshes with existing and future control structures
PERRY RIDGE
14 Restore Hydrology
e.g. Address potential hydrologic impacts of Trans Texas Water Plan. Promote fresh water releases from Toledo Bend
SABINE LAKE
16 Increase Water Quality
e.g. Reduce pollution by best management practices
17 Address potential hydrologic impacts of Trans Texas Water Plan
SABINE LAKE RIDGE
18 Restore/Maintain Hydrology
e.g. Address impacts of the Trans Texas Water Plan
e.g. Maintain Toledo Bend/Sabine Lake freshwater inflows
SOUTHEAST SABINE
19 Address impacts of the Trans Texas Water Plan
SW GUM COVE
20 Restore Hydrology
e.g. Maintain fresh water inflows from Sabine Lake (address Trans Texas Water Plan impacts)
WILLOW BAYOU
21 Restore Hydrology
e.g. Maintain freshwater inflows from Sabine River
22 Contingency Plan for the Trans Texas Water Plan (RESEARCH)
GUM COVE
23 Prairie restoration and protection
e.g. Prairie restoration and protection using agricultural incentive based programs such as CRP and WRP.
JOHNSON'S BAYOU RIDGE
24 Maintain Ridge Function
e.g. Maintain chenier ridge natural habitat (for neo-tropical migrant birds)
WEST JOHNSON'S BAYOU
25 Maintain Toledo Bend/Sabine Lake Freshwater inflows
26 Trans Texas Water Plan Contingency Plan (Research and develop contingency plan)
SOUTH WHITE LAKE
27 Allow for Limited Estuarine Organism Access
e.g. Allow for limited estuarine organism access into the lake at the Schooner Bayou, Leland Bowman and Catfish Locks; Monitor fisheries access at the locks
28 Manage Lake as a Low Salinity Fresh to Intermediate Ecosystem
e.g. Protect the rice/crawfish farms and fresh marshes from salt water intrusion; Protect wetland diversity; Maintain the marshes surrounding the lake as a very low salinity fresh to intermediate marsh habitats
EAST JOHNSON'S BAYOU
29 Address bullwhip mortality
SECOND BAYOU
30 Address bullwhip mortality
e.g. Address bullwhip mortality in the unit through studies