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Last modified
1/25/2010 6:24:14 PM
Creation date
10/4/2006 10:51:07 PM
Metadata
Fields
Template:
Floodplain Documents
County
Statewide
Community
State of Colorado
Basin
Statewide
Title
Office of the State engineer Rules and Regulation for Dam Safety Construction
Date
8/26/1988
Prepared For
State of Colorado
Prepared By
Office of The State Engineer
Floodplain - Doc Type
Educational/Technical/Reference Information
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<br />~ <br /> <br />Rule 4. Definitions: <br /> <br />4.A. The following definitions are applicable to these Rules for <br />Dam Safety and Dam Construction: <br /> <br />4.A.(l) "Alteration to, Modification of, or Repair of an <br />Existing Dam or Appurtenant Structure" means to make different from <br />the originally approved construction plans and specifications or <br />current condition, except for ordinary repairs and general maintenance <br />as defined in Rule 12. . <br /> <br />4.A.(2) "Appurtenant Structure" means the outlet works and <br />controls, spillways and controls, access structures, bridges, and <br />related housings at a dam. <br /> <br />4.A. (3) "Breach Order" is an order issued by the State Engineer, <br />or his designee, to remove all or part of a dam to the level of the <br />natural ground, so it is incapable of impounding water and creating a <br />hazard. <br /> <br />4,A.(4) "Capacity" is the volume of water capable of being <br />impounded in a reservoir at the high-water line, normally expressed in <br />acre-feet. Dead storage below the natural surface of the ground is <br />excluded. <br /> <br />4.A.(S) "Classification of a Dam" is the placement of a dam into <br />a category based upon an evaluation of the consequences of the failure <br />of the dam absent flooding conditions, assuming the reservoir is at <br />the high-water line. No loss of life nor significant damage is <br />expected to occur if the increased depth of flow is two feet or less <br />and the product of the average flood plain flow velocity and the depth <br />of flow at a critical area is less than seven in the incremental zone. <br /> <br />4.A.(S)(a) A "Class I" dam is a dam for which loss of human <br />life is expected in the event of failure of the dam. <br /> <br />4.A.(S)(b) A nClass II" dam is a dam for which significant <br />damage is expected to occur, but no loss of human life is expected in <br />the event of failure of the dam. Significant damage is defined as <br />damage to structures where people generally live, work, or recreate, <br />or public or private facilities exclusive of unpaved roads and picnic <br />areas. Damage means rendering the structures uninhabitable or <br />inoperable. <br /> <br />4.A.(S)(c) A .Class III" dam is a dam for which loss of human <br />life is not expected, and damage to structures and public facilities <br />as defined for a "Cl ass II" dam is not expected in the event of <br />failure of the dam. <br /> <br />- 2 - <br />
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