Plans should be clear, concise and drafted specifically for the purpose of dam construction. Subdivision plats for mass grading with embankments added are unacceptable. At a minimum, the following should be shown on the set of drawings submitted to the State Engineer for permitting
(NAC 535.210(6)):
- Vicinity/Location map.
- Plan view of watershed boundary and downstream hazard
- Topographical map showing contours of subject area
- Plan view of dam and reservoir area.
- Location of any test pits, trenches or boreholes - can be in the geotechnical report
- Survey tie to and from section corner to center of crest of dam or maximum section
- Cross section of embankment along axis and maximum section
- Elevations of
- Dam crest and emergency spillway crest
- Maximum normal and flood water elevations in reservoir
- Maximum flow line in channels
- Slopes of upstream and downstream faces
- Details of erosion protection
- Dimensions and locations of all pervious, semi-pervious, impervious materials
- Dimensions and locations of all embankment and foundation drains
- Spillway plan view and cross section
- Outlet plan view and cross section, elevations and control works
- Inlet plan view and cross section, elevations and control works, as applicable
- Locations of piezometers, settlement gauges, survey monuments or other instrumentation.
- Outlet conduit seep interceptor (drain and filter)
- Reservoir area/capacity curves to the top of the embankment
- Discharge curve for outlet/spillway - can be in the design document
- Details of all appurtenances
- Railings
- Structural concrete, curbing and flatwork
- Power supply
- Plumbing, etc.
Please note that the number of sheets described in the regulation is the bare minimum for a simple dam. As a design increases in complexity, the details and number of sheets necessary to illustrate them will increase accordingly.