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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.
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DINGMANS CREEK, SITE 4, SMALL SLIDE, DELAWARE WATER GAP PROJECTVEGETATED KEYS; TRAFFIC CONTROL STONES; PLANTINGS; SINGLE STONE BENDWAY WEIRS; & A RANDOM BOULDER FIELD FOR ROUGHNESS & AQUATIC HABITAT
PRE-PROJECT PHOTOSby Dave DerrickDec. 15, 2008 (HIGH WATER)LEAF OFF CONDITION
HIGH WATER-Looking US @ project bank. Stream is obviously eroding this bank, which contributes significant sediment to the system PRE-PROJECT DINGMANS CR-SITE 4 PIX BY DERRICK 12-15-2008
HIGH WATER-Looking DS toward DS end of project. PRE-PROJECT DINGMANS CR-SITE 4 PIX BY DERRICK 12-15-2008
Correction: There should be 3 Traffic Control Stones between each Single Stone Bendway Weir, not 2. Courtesy of Ecological Restoration, Inc.
TCS SSBW Key Courtesy of Ecological Restoration, Inc.
PLANTS PLANTED Common Name # Size • 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 Pine 150 3 gallon pots
Two healthy Single Stone Bendway Weir (SSBW) stones. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK 9-19-2009
Key Traffic Control Stones (TCS) with Single Stone Bendway Weirs (SSBW) & vegged keys & pole plantings Key Key Key TCS TCS TCS Key TCS TCS Key SSBW TCS TCS TCS SSBW Key Thalweg TCS SSBW 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
Key Key Key TCS TCS TCS Key TCS TCS Key SSBW TCS TCS TCS SSBW Key Thalweg TCS SSBW Rooted–stock container shrubs & trees added to Traffic Control Stones at toe & all bare areas of the entire eroding bank
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 Place stone in key trench. Flow
Looking across @ 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 9-19-2009
Close-up of stone being placed in key for BW #4. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK 9-19-2009
Looking across @ key installation of BW #5. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK 9-19-2009
Looking across @ live poles & key stones in BW #5. CONSTRUCTION DINGMANS CR-SITE 4 PIX BY DERRICK 9-19-2009
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
Detail for key Seed Flow DONE WITH THE KEY
Close-up of a Single Stone Bendway Weir (SSBW) & vegged key & pole plantings Key Key Key TCS SSBW Thalweg
CONSTRUCTION COMPLETEPhotos by Dave Derrick SEPT. 24, 2009Very natural, minimal structure approach
Construction complete, looking DS @ 175 ft of the 200 ft long project. This should look completely natural in a couple years!! CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking DS. TCS, Single Stone Bendway Weirs, random boulder field, many pole plantings & rooted-stock plants provide plenty of roughness @ toe of slide. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, DS @ the random boulder field & planted slide. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking across @ Bendway Weir #3, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking across @ Bendway Weir #4, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking across @ Bendway Weir #7, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking across @ dense rooted-stock plantings of trees & shrubs on the DS 1/3 of the slide area CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
Construction complete, looking across @ Bendway Weir #5, along with a vegetated key, hillside plantings, & TCS US & DS. CONSTRUCTION COMPLETE DINGMANS CR-SITE 4 DERRICK 9-24-2009
1 YEAR AFTER PROJECT COMPLETION Photos by Dave DerrickSEPT. 12, 2010
1 YEAR LATER-Looking @ LDB Bendway Weir #1. BW is stable, plantings are growing, upper bank stable. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
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 9-12-2010
1 YEAR LATER-Looking @ plantings & Bendway Weir #2. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Looking @ 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 9-12-2010
1 YEAR LATER-Looking DS @ well-aligned channel with stone & veg roughness on outer bank throughout the bend. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Stream has put almost all of the stone in compression (imbricated) 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Mid-project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Mid-project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-End of project Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Looking US @ great functioning channel & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Looking US @ Bendway Weirs, Traffic Control Stones, & vegged floodplain bench. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Looking US stable mid-section of project. 1 YEAR LATER-DINGMANS CR.-SITE 4-PIX BY DERRICK 9-12-2010
1 YEAR LATER-Looking US @ 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 9-12-2010