2023 Wyoming Statutes › Title 41 - Water › Chapter 3 - Water Rights; Administration and Control › Article 3 - Reservoirs › Section 41-3-307 - Alterations or Repairs of Dams or Diversion Systems; Definitions.

41-3-307. Alterations or repairs of dams or diversion systems; definitions.
(a) As used in this act unless the context otherwise requires:
(i) "Alterations" or "repairs" means only such alterations or repairs as may directly affect the safety of the dam or diversion system, as determined by the state engineer or his designated representative;
(ii) "Appurtenant works" include, but are not limited to, such structures as spillways, either in the dam or separate therefrom, the reservoir and its rim, low level outlet works, and water conduits such as tunnels, pipelines or penstocks, either through the dam or its abutments;
(iii) "Dam" means any artificial barrier, including appurtenant works, used to impound or divert water and which is or will be greater than twenty (20) feet in height or with an impounding capacity of fifty (50) acre-feet or greater. "Dam" shall not include artificial barriers including appurtenant works:
(A) Six (6) feet in height or less, regardless of storage capacity; or
(B) Which impound less than fifteen (15) acre-feet, regardless of height.
(iv) "Days" used in establishing deadlines means calendar days, including Sundays and holidays;
(v) "Diversion system" means any channel diversion, headgate or diversion structure with a carrying capacity in excess of fifty (50) cubic feet of water per second of time;
(vi) "Emergency" means any threat to life or property caused by the condition of any dam, reservoir or diversion system, or by present or imminent floods which threaten the safety or structural integrity of any dam or diversion system;
(vii) "Emergency response agency" means any agency which the dam owner may be required to notify in case of an emergency, such as sheriff's office, highway patrol or local emergency coordinator;
(viii) "Enlargement" means any change in or addition to an existing dam or reservoir which raises or may raise the water storage elevation of the water impounded by the dam;
(ix) "Inspection" means visual or mechanical checks, measures, borings and any other methods necessary for determination of the adequacy of construction techniques, conformity of work with approved plans and specifications, and the safety and operating performance of a dam or diversion system and appurtenant works;
(x) "Owner" includes any of the following who own, control, operate, maintain, manage or propose to construct a dam or reservoir:
(A) The state and its departments, institutions, agencies and political subdivisions;
(B) Every municipal or quasi-municipal corporation;
(C) Every public utility;
(D) Every district;
(E) Every person;
(F) The federal government and its departments, institutions, agencies and political subdivisions;
(G) The duly authorized agents, lessees or trustees of any of the foregoing; and
(H) Receivers or trustees appointed by any court for any of the foregoing.
(xi) "Person" means any person, firm, association, organization, partnership, business trust, corporation or company;
(xii) "Reservoir" means any basin which contains or will contain impounded water;
(xiii) "This act" means W.S. 41-3-307 through 41-3-317.