Catalog Record

Data and Report from S&T Project 21084: Cost Estimating Guidelines for Dam Decommissioning Alternative

We created planning-level cost estimating tools to assist with projects needing to consider the dam removal alternative: (1) new databases of case studies (Duda et al. 2023a; Tullos and Bountry 2023); (2) scoping questions to help determine if complexity cost drivers will be present; (3) machine learning based regression trees to estimate a potential cost range; and (4) a Computation Guide for Cost Estimating that can be used to inform discussions on potential dam removal cost items, quantities, and unit costs (Appendix A). Using the collected data and knowing some basic characteristics about the average annual flow and geographic location of the dam site, in addition to dam size, can improve the ability to use past case studies for planning-level cost estimating. By additionally incorporating scoping questions to assess likelihood of complexity cost drivers, the initial uncertainty of a cost estimate can be further reduced especially for small dams. Applying the Computation Guide for Cost Estimating requires more robust information but helps users reduce cost uncertainty. This step further refines the dam removal objective, removal approach (partial or full; phased or instantaneous), engineering design, construction means and methods, quantities, and unit costs, and results in a quantitative cost estimate.
Generation Effort S&T Project 21084: Cost Estimating Guidelines for Dam Decommissioning Alternative
Themes Environmental
Tags Database Infrastructure, Predicting Cost, Dam Removal
Reclamation Project
Reclamation Program Science and Technology Program

Location Information

Location Name United States
Location Description The 50 United States and the District of Columbia.
Location Tags United States, District Of Columbia
Location Parent
State(s) Alaska, Alabama, Arkansas, Arizona, California, Colorado, Connecticut, District Of Columbia, Delaware, Florida, Georgia, Hawaii, Iowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Missouri, Mississippi, Montana, North Carolina, North Dakota, Nebraska, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Vermont, Washington, Wisconsin, West Virginia, Wyoming
Unified Region(s) North Atlantic-Appalachian, South Atlantic-Gulf, Great Lakes, Mississippi Basin, Missouri Basin, Arkansas-Rio Grande-Texas-Gulf, Upper Colorado Basin, Lower Colorado Basin, Columbia-Pacific Northwest, California-Great Basin, Alaska, Pacific Islands
Elevation [ N/A ]
Vertical Datum [ N/A ]
Coordinates (lat, long) See Location Details
Horizontal Datum WGS84