dead dikes. dead dikes using dead posts is a dave derrick discovery (ddd)
TRANSCRIPT
DEAD DIKES
DEAD DIKES USING DEAD
POSTS IS A DAVE DERRICK
DISCOVERY (DDD)
DEAD DIKES: Dense rows of large driven dead posts, or trenches
filled with posts and/or brush, positioned perpendicular to high flow
on floodplain areas to reduce flow velocities, & possibly catch debris, &
induce sediment deposition.
WALNUT BROOK, LOCATED IN MINE BROOK
PARK, FLEMINGTON, NEW JERSEY
FOUR ERODING BENDS WITH SEVERAL HEADCUTS
PROJECT CONSTRUCTED JUNE 23 - June 26, 2009
CONSTRUCTION-Looking across @ Dead Dike (DD)posts designed to slow flow in a floodplain high-flow relief channel.
CONSTRUCTION-WALNUT BROOK, NJ. PIX BY DERRICK 6-23-2009
CONSTRUCTION-Looking US @ Dead Dike (DD) posts. Concern was that headcutting would occur in this high flow floodplain
channel during long-duration, high flow flood events. DD designed to reduce velocities to prevent headcutting.
CONSTRUCTION-WALNUT BROOK, NJ. PIX BY DERRICK 6-23-2009
CONSTRUCTION COMPLETE
Photos by Dave Derrick SEPT. 20, 2009
3 MONTHS OLD-Looking @ Dead Dike (DD)
3 MONTHS OLD-WALNUT BROOK, NJ. -PIX BY DERRICK 9-20-2009
3 YEARS & 9 MONTHS AFTER
PROJECT COMPLETION
Photos by Dave Derrick MARCH 13, 2013
3 YRS 9 MONTHS LATER-Looking across @ deep driven posts (Dead Dike) designed to slow flow in secondary channels
on floodplain. Still catching debris & still working!!
3 YRS 9 MONTHS LATER-WALNUT BROOK, NJ. PIX BY DERRICK 3-13-2013
3 YRS 9 MONTHS LATER-WALNUT BROOK, NJ. PIX BY DERRICK 3-13-2013
3 YRS 9 MONTHS LATER-Looking across @ deep posts (Dead Dike) designed to slow flow in secondary channels on floodplain
Little Blue River
Hanover, KS. Clark Site
Built July 2002
DEAD DIKES USING BRUSH
FILLED TRENCHES IS A PHIL BALCH DISCOVERY (PBD)
14Site # 18 – Clark - 7/2002-Removing debris that is choking channel.
15
Site # 18 – Clark - 3/2003, 8 months after construction-Trenches cut on floodway, then
backfilled with woody debris from river to slow flow, induce sediment deposition, & induce vegetative
growth to make this an ineffective flow area. River is three times as wide as it should be.
16
Site # 18 – Clark 3/2003 - 8 months after construction- close-up of Dead Dike trench
17
Site # 18 - Clark, 6/2006 - 4 years After Construction - well vegetated floodplain bench due to Dead Dikes (DD)
This PowerPoint presentation was developed & built by Dave Derrick.
Any questions or comments, call my personal cell @ 601-218-7717, or email @ [email protected]
Enjoy the information!!
Geaux Saints!!