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Resources

 

FOR DAM OWNERS
Maintenance Manual for Dam Owners

Responsibility and Liability

Procuring the Services of a Professional Engineer

Internal Erosion of Earth Dams

Plant Impacts on Earthen Dam (FEMA L263)

Animal Impacts on Earthen Dams (FEMA L264)

Conduits Through Earthen Dams (FEMA L266)

Sample Dam Inspection Form

Examples of Approved Trash Racks

 

FOR ENGINEERS

Classification of Dams
The design, inspection, and maintenance criteria for a dam are based on its classification.  In Nebraska, dams are classified by their size and their hazard potential.

NRCS Technical Release No. 60 – Earth Dams and Reservoirs
Major dams in Nebraska generally must be designed to meet the criteria outlined in NRCS Technical Release No. 60 – Earth Dams and Reservoirs (July 2005)

NRCS Conservation Practice Standard – Pond 378
Farm pond dams in Nebraska generally must be designed to meet the criteria outlined in NRCS Conservation Practice Standard – Pond 378 for Nebraska (January 1995)

Requirements for Approval of Farm Pond Dams Constructed Before 2005
Unapproved farm pond dams constructed before September 4, 2005 are required to meet minimum structural, condition, and application requirements to receive Department approval.

NOAA Atlas 14 Point Precipitation Frequency Estimates
The updated precipitation frequency estimates should be used when designing dams in Nebraska.
 
Nebraska Probable Maximum Precipitation (PMP) Study Report and Appendix F, Short Storm List Storm Analysis
In 2008, a State-Wide PMP Study was completed.  The values listed in the report may be used for the design of dams in Nebraska.

NRCS Design Note 6 - Riprap Lined Plunge Pool for Cantilever Outlet

NRCS Technical Release 18 - Computation of Joint Extensibility Requirements 
Guidance for computing the joint separation that will occur along conduits as a result of consolidation of the foundation under the conduit during and after construction.