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Challenges and opportunities for dam removal projects in Texas. Lessons that can be learned from other states Ryan McGillicuddy – Texas Parks and Wildlife Department. Stronach Dam, Fish in the Pine River, MI. Background. Nationwide: 75,000 dams listed on the National Inventory of Dams
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Challenges and opportunities for dam removal projects in Texas Lessons that can be learned from other states Ryan McGillicuddy – Texas Parks and Wildlife Department Stronach Dam, Fish in the Pine River, MI
Background Nationwide: 75,000 dams listed on the National Inventory of Dams Estimated 2.5 million nationwide Texas: Over 7500 dams listed on the National Inventory of Dams 1000s more undocumented dams 74 dams failed in Texas between 1989 and 2009.
Benefits of Dams • Water supply • Hydropower • Flood control • Navigation • Recreational opportunities Starcke Dam, Marble Falls, TX. 2007 Flood
Impacts of Dams Alter fish and wildlife habitats and natural fluvial processes Alter the dynamic transport of water and sediment Barrier to passage of nutrients and aquatic organisms Change water temperatures Contaminated sediments Floodplain isolation and reduced peak flows Shift from lotic to lentic habitat less suitable for native species, increases generalist species and may decrease diversity Aging infrastructure poses risk to property and safety. Life expectancy of the average dam is 50 years. Average dam age in the U.S. is 51 years. Many dams are now obsolete
Dam Removal: A New Option • Once perceived as anti-progress • Increasingly accepted as an option for restoring waterways • Advancing science documenting effects of removal • Successful projects have brought visibility, provided positive examples • Costs are better understood: • Wisconsin, repair 3X the cost of removal • Pennsylvania, average cost of $75,000 • Nonetheless, a difficult process requiring the coordination of multiple stakeholders and regulatory agencies
According to American Rivers: • 1,057 recorded dam removals in the US • 593 since 1999 • 63 in 2012 • Pennsylvania alone has removed ~275 since 1999, and ~50 since 2010 • No recent removals in the Southwest Englewood Dam, Englewood, Oh
Questions How do state programs regulate dam removal and to what extend do they assist in the process? What are the variables that lead to success? What can Texas learn from these successes?
Study Area • Examined efforts in Pennsylvania, Wisconsin, New Hampshire, and Texas. • Mostly small and/or obsolete dams
Variables Reviewed Legal framework/Permitting process Agency structure and interagency coordination Technical guidance provided Availability of funding and/or financial assistance Public outreach and stakeholder involvement
Other considerations for Texas Geography: Surface water
Species with lifecycles impacted by dams Paddlefish (Polydonspathula) Giant freshwater prawn (Macrobrachium carcinus) Shovelnose Sturgeon (Scaphirhynchusplatorynchus) American Eel (Anguilla rostrata)
Funding Grant TCEQ authority to levy fines for dam safety violations. Increase funding for dam safety program, including grants for dam owners with limited means. Fishing license surcharge ($1) for river restoration projects, including dam removal. Approximately $2 million. All require legislative action.
Funding, cont’d Improved technical assistance from agencies (project design, grant writing assistance, etc.) should lower cost. Partnerships Southeast Aquatic Resources Partnership Desert Fish Habitat Partnership Guadalupe Bass Restoration Initiative Local watershed groups Natural Resource Damage Assessment (NRDA) funds USFWS Fish Passage Program
Fish Passage Program Ottine Dam removal project. San Marcos River, Ottine, TX
Mitigation Banks Used to offset permitted impacts to waters of the U.S. For-profit model Increasing number of stream restoration banks in Texas Limitations: Small order streams Existing policy does not favor in-channel restoration