DINGMANS CREEK, SITE 4, SMALL SLIDE, DELAWARE WATER GAP PROJECT VEGETATED KEYS; TRAFFIC CONTROL STONES; PLANTINGS; SINGLE STONE BENDWAY WEIRS; & A RANDOM BOULDER FIELD FOR ROUGHNESS & AQUATIC HABITAT
PRE-PROJECT PHOTOS by Dave Derrick Dec. 15, 2008 (HIGH WATER) LEAF OFF CONDITION
HIGH WATER-Looking project bank. Stream is obviously eroding this bank, which contributes significant sediment to the system PRE-PROJECT DINGMANS CR-SITE 4 PIX BY DERRICK
HIGH WATER-Looking DS toward DS end of project. PRE-PROJECT DINGMANS CR-SITE 4 PIX BY DERRICK
THE PLAN
Courtesy of Ecological Restoration, Inc. Correction: There should be 3 Traffic Control Stones between each Single Stone Bendway Weir, not 2.
Courtesy of Ecological Restoration, Inc. SSBW TCS Key
PLANTS PLANTED Gray Birch 50 2 gallon pots Gray Birch 200 unrooted poles Buttonbush 25 bare root Silky Dogwood 200 bare root Ninebark 175 bare root Rhododendron 50 3 gallon pots White Pine150 3 gallon pots Common Name # Size
Two healthy Single Stone Bendway Weir (SSBW) stones. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK
CONSTRUCTION PHOTOS by Dave Derrick, September 19-20, 2009
Traffic Control Stones (TCS) sized about 3 ft by 3 ft by 4 ft, dug into the bed & bank, designed to stabilize & roughen the bank, are spaced 3 to 6 ft apart. Every 4th TCS is keyed into the bank & has a Single Stone Bendway Weir attached. 8 SSBW total Traffic Control Stones (TCS) with Single Stone Bendway Weirs (SSBW) & vegged keys & pole plantings Key TCS Key TCS SSBW TCS SSBW Key Thalweg Key
Rooted–stock container shrubs & trees added to Traffic Control Stones at toe & all bare areas of the entire eroding bank Key TCS Key TCS SSBW TCS SSBW Key Thalweg
CONSTRUCTING THE VEGETATED KEY, TRAFFIC CONTROL STONE, & SINGLE STONE BENDWAY WEIRS FOR # 4 & 5.
Place Live Poles against both sides of trench Detail for key Flow
Detail for key Flow Place stone in key trench.
Looking stone being placed in the key for Bendway Weir #4. Live poles have already been placed in the key trench. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK
Close-up of stone being placed in key for BW #4. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK
Looking key installation of BW #5. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK
Looking live poles & key stones in BW #5. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK
Choke stone with gravel-cobble (white areas) & water in Detail for key Flow
Backfill and overfill with native soils, then compact (some settling will still occur) Detail for key Flow
Seed DONE WITH THE KEY Detail for key Flow
Close-up of a Single Stone Bendway Weir (SSBW) & vegged key & pole plantings Thalweg Key TCS SSBW Key
CONSTRUCTION COMPLETE Photos by Dave Derrick SEPT. 24, 2009 Very natural, minimal structure approach
Construction complete, looking 175 ft of the 200 ft long project. This should look completely natural in a couple years!! CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking DS. TCS, Single Stone Bendway Weirs, random boulder field, many pole plantings & rooted-stock plants provide plenty of toe of slide. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, the random boulder field & planted slide. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking Bendway Weir #3, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking Bendway Weir #4, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking Bendway Weir #7, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking dense rooted-stock plantings of trees & shrubs on the DS 1/3 of the slide area CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
Construction complete, looking Bendway Weir #5, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK
1 YEAR AFTER PROJECT COMPLETION Photos by Dave Derrick SEPT. 12, 2010
1 YEAR LDB Bendway Weir #1. BW is stable, plantings are growing, upper bank stable. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Bendway Weir #2. Plantings will trap & stabilize eroded material from the upper bank. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR plantings & Bendway Weir #2. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR Bendway Weir # 2 & plantings. All stable, growth good, deep pool off stream end of Bendway Weir. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Looking well-aligned channel with stone & veg roughness on outer bank throughout the bend. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Stream has put almost all of the stone in compression (imbricated) 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Mid-project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Mid-project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-End of project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Looking great functioning channel & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Looking Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Looking US stable mid-section of project. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
1 YEAR LATER-Looking robust plantings that will stabilize the bank & trap coluvium for bare areas of upper bank. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK
Cleophus says “Geaux Saints”