Idaho Administrative Code › Title IDAPA 37 - Water Resources, Department of › Rule 37.03.06 - SAFETY OF DAMS RULES › Section 37.03.06.035 - DESIGN REPORTS, DRAWINGS, AND SPECIFICATIONS

Current through August 31, 2023
The following provisions shall apply when submitting plans,
				drawings, reports, and specifications for dams to the Director for design
				review and approval, prior to commencing construction. (3-30-23)
01.
Submission of Duplicate Plans,
			 Drawings and Specifications
. Any owner desiring to construct, enlarge,
			 alter, or repair any dam, shall submit duplicate plans, drawings and
			 specifications prepared by an engineer for the proposed work to the Director
			 with required fees for approval prior to commencing construction.
			 (3-30-23)
02.
Applying for
			 and Obtaining Written Approval
. Construction of a new dam, or the
			 enlargement, alteration, or repair of such shall not commence until the owner
			 has applied for and obtained written approval of the plans, drawings, and
			 specifications from the Director. (3-30-23)
03.
Preparation and Submission of
			 Plans
. Plans and drawings shall be of a sufficient scale with an
			 adequate number of views showing proper dimensions, so that the plans and
			 drawings may be readily interpreted and so that the structure and appurtenances
			 can be built in conformance with the approved design. Plans and drawings shall
			 be submitted in both printed and digital format, with the printed version
			 consisting of paper size eleven by seventeen (11 x 17) inches. After reviewing
			 the plans, the Director will notify the owner of any required changes.
			 (3-30-23)
04.
Information
			 Included with Plans
. Plans for new dams or the enlargement, alteration,
			 or repair of such shall include as much of the following information as
			 determined necessary by the Director to adequately describe the enlargement,
			 alteration, or repair and the effect on the existing structure or its
			 appurtenances: (3-30-23)
a. A topographic map
			 of the project site showing the location of the proposed construction by
			 section, township and range, and location of all borings, test pits, borrow
			 pits and other locations of samples obtained for field or laboratory testing;
			 (3-30-23)
b. A profile depicting
			 the locations, elevations, and depths of borings or test pits, including the
			 visual illustration of logs of bore holes, test pits, or borrow pits;
			 (3-30-23)
c. A cross-section of the
			 structure at maximum section showing elevation and width of crest, slopes of
			 upstream and downstream faces, thickness of riprap, zoning of earth embankment,
			 location of cutoff and bonding trenches, elevations and dimensional heights,
			 size and type of conduits, valves, operating mechanism, and dimensions of all
			 other essential elements deemed to be necessary for properly constructing the
			 approved design; (3-30-23)
d.
			 Detailed drawings showing plans, cross and longitudinal sections of appurtenant
			 features such as but not limited to the spillway, training walls, outlet
			 conduits, valves, gates, trash rack, and control works; (3-30-23)
e. A curve or table showing the capacity of
			 the reservoir or tailings impoundment in acre-feet vs. gauge height referenced
			 to a common project datum and the computations used in making such
			 determinations; (3-30-23)
f. A
			 curve or table showing the outlet discharge capacity in cubic feet per second
			 vs. gauge height of reservoir storage level, and the computations used in
			 making such determinations; (3-30-23)
g. A curve or table showing the spillway
			 discharge capacity in cubic feet per second vs. gauge height of the reservoir
			 or flood surcharge level above the spillway crest and the computations used in
			 making such determinations; (3-30-23)
h. Detailed drawings of spillway
			 structure(s), including cross-sections of the channel entrance and exit points
			 to and from the spillway and a spillway profile; (3-30-23)
i. Plans for flow measuring devices capable
			 of providing an accurate determination of the flow of the stream above or below
			 the reservoir, and a permanent reservoir or staff gauge near the outlet of the
			 reservoir plainly marked in feet and tenths of a foot referenced to an approved
			 datum; and (3-30-23)
j. Plans or
			 drawings of instruments recommended by the owner or engineer to monitor the
			 performance of the dam to assure safe operation, or as may be required by the
			 Director as deemed necessary to monitor any structure for benefit of public
			 safety regardless of size. (3-30-23)