The Restoration of Shadorvan Dam-Bridge, Cultural & Historical Landmark of Shooshtar
Dam Removal and Restoration: A Volunteer Monitoring Approach
Transcript of Dam Removal and Restoration: A Volunteer Monitoring Approach
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Musconetcong Watershed AssociationBeth Styler Barry and Nancy Roberts‐Lawler
Dam Removal and Restoration: A Volunteer Monitoring Approach
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Dedicated to protecting and improving the quality of the Musconetcong River Watershed
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The MWA and Our MissionThe Musconetcong Watershed Association is an independent, non‐profit organization dedicated to protecting and improving the quality of the Musconetcong River Watershed, including its natural and cultural resources, through:
• Public education and awareness programs
• River monitoring
• Promotion of sustainable land management practices
• Community involvement
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The Musconetcong River
158 square 158 square milesmiles
4 counties4 counties
25 townships25 townships
42 miles42 miles
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24 miles of Musconetcong River Designated Wild & Scenic
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River RestorationThe Musconetcong River is generally in good condition, but there are some serious water quality problems in certain areas of the main stem….
Thermal pollutionNutrient enrichmentSevere river bank erosionNative trees eliminatedInvasive non‐native vegetation flourishing
These factors stress the ability of these critical ecosystems to function properly.
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Riparian RestorationThe MWA has teamed up with North Jersey RC&D, NRCS, TU, USF&W and NJ F&W to restore riparian buffers along the main stem and tributaries throughout the watershed
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River Preservation & Restoration through Partnerships
The MWA is part of a long‐term effort to restore the river's natural flow, improve water quality and enhance fish migration.
•Stream bank stabilization
•Enhance riparian buffers by adding trees and natural grasses• Enabling fish passage• stocking the river with fish or other living organisms.
•the removal of dams and other man‐made structures, and adding meanders
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Why Remove Dams?
Dams alter the natural flow and with it virtually every aspect of a river ecosystem, including • water quality• sediment transport and deposition• fish migrations and reproduction, • riparian and floodplain habitat and the organisms that rely on this habitat.
Taken from the American Rivers website www.americanrivers.org
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Dams require $$$
• Dams require ongoing maintenance
–On some streams, silt accumulates behind the dam, lowering the reservoir’s capacity to store water
• As dams age, maintenance costs and safety hazards often increase, resulting in an increasing financial burden and liability on the dam owner
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Musconetcong Watershed AssociationWhat We Are Working On
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Gruendyke Dam: Before
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Gruendyke Mill Dam Removed March 13, 2008
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Gruendyke Dam: After
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Riparian Restoration Begins
TreesSycamoreSilver MapleRed MapleRiver BirchGreen AshWhite Ash
ShrubsElderberryPreferenceRed Olsen DogwoodSilky DogwoodGrey DogwoodButtonbush (obligate wetland)AlderViburnum
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HOW DO WE KNOW IF THE DAM REMOVAL IMPROVES WATER QUALITY?
MONITOR!MONITOR!
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Benefits of Monitoring
• Can evaluate the performance of individual restoration projects
• Can assess the long‐term ecological response of restorations
• Help us improve our understanding of restoration ecology and improve restoration techniques
• Help us better anticipate the effects of future dam removal projects
• Help us communicate our project results to stakeholders and the public.
From Stream Barrier Removal Guide, Gulf of Maine Council on the Marine Environment
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Musconetcong Watershed AssociationSeber Dam
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Musconetcong Watershed AssociationSeber Dam
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MWA River Watcher Program
• Started in 2007 to establish baseline
• Philosophy‐start slow and build on success
• 4 sites – Lake Hopatcong outfall
– Stephens State Park
– Point Mountain
– Finesville
• Bio, Chem, Visual/Habitat, Photos
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MWA River Watcher Baseline Sites
Mt. Joy (Finesville)
Point Mountain
Stephens S.P.
Lake Hopatcong
Seber
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Musconetcong Watershed AssociationSeber Dam
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Musconetcong Watershed AssociationSeber Dam – Upstream View
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Musconetcong Watershed AssociationSeber Dam ‐ Downstream View
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Musconetcong Watershed AssociationSeber Dam Breach February 2009
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Adjust Methods to Fit Data UseRiver Watcher
– Bio• Modified SOS• 1 sq meter kick• Seine type net• ID and count by VM to order/family
– Chemistry• LaMotte kits (DO, N, pH)
– Visual/Habitat• NJDEP VM Assessment
– Physical• Temperature*• Flow (average W x D x Reach length/Float time)
– Photos
Seber Dam Monitoring– Bio
• SOS• Five minute kick• D‐frame net 800u• Sept sample ID + count by
Normandeau to genus/species– Chemistry
• LaMotte (DO, N, pH)– Visual/Habitat
• NJDEP VM Assessment• In September used RBP
– Physical– Temperature*– Flow– Turbidity (Tube)– Photos from specific locations
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Physical Changes to Seber Site
• Before– Width at bank full=160ft
– Depth at bank full=7 ft
• After– Width =80‐102 ft
– Depth =14‐22”
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Biological Assessment Scores at Seber (SOS)
Dam removalFebruary 2009
Sediment begins showing in sample
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EPT at Seber
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Water Temperature vs Dissolved Oxygen at Seber Dam site
Dam removalFebruary 2009
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pH at Seber Dam site
Almost no change is pH at dam site
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Nitrates at Seber
Nitrates do not appear to be a significant factor at the dam site
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Turbidity at Seber‐NJDEP VM Program
Turbidity appears in the normal range during study time
Abundance of sediment above site in May 2009
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Lessons Learned
• Start monitoring as soon as you can
• Monitor upstream of the dam as well as downstream at a minimum
• Include a reference reach in your study for comparability
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Things to consider
• Dam Removal timelines affect your study layout
• Where should you monitor and how many samples should you take?
• How will the data you generate compare to other data you may be collecting elsewhere on the river?
• Are your volunteers available at all of the times you need them?
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Upcoming Projects
From Greg Sabol, TU
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Musconetcong Watershed AssociationWarren Glen and Hughesville Dams
Application is in for Feasibility Study!
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Finesville Dam: final public meetingDec. 1, 2009
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Thanks to our volunteers at Seber!
Chuck Gullage
Andy Peterson
Don Proefrock
Erik Henriksen
Bob Hamilton
…and Luke Diglio of Montclair State University
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Musconetcong River Partner ListNatural Resources Conservation Service – Natural Resources Conservation Service – technical assistance and
financial assistance on riparian buffer restoration
US Fish and Wildlife Service – technical assistance and financial assistance from the Partners for Fish & Wildlife Program
The National Oceanographic and Atmospheric Administration – technical and possible financial assistance through the American Rivers‐NOAA Community‐Based Restoration Program.
American Rivers – technical, outreach, and regulatory assistance, and possible financial assistance through the American Rivers‐NOAA Community‐Based Restoration Partnership and other grant funding.
North Jersey RC&D Council – technical assistance and financial assistance on riparian buffer restoration.
Musconetcong Watershed Association –local landowner outreach, education, technical assistance.
NJ Division of Fish and Wildlife – technical assistance on local fisheries issues.
Trout Unlimited – in‐kind volunteer assistance from membership and possible limited financial assistance from local TU funds.
National Park Service
Corporate Wetland Restoration Partnership ‐ financial assistance