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In the City, each acre of irrigable property requires roughly four (4) acre feet of water annually during normal water years as published by Utah State Engineers Office in the Consumptive Use of Irrigated Crops in Utah, Research Report 145, Utah State University, 1994. As such, water required to be conveyed to the City as part of a request for approval of an annexation, subdivision, large scale development, or site plan, is established by the State Engineers Office as sufficient to meet the water use requirements of the proposed use. The City has performed an engineered study to determine ERC consumption in acre feet for residential and commercial development. The City has determined that each ERC is equivalent to .30 acre feet for indoor use depending upon development type. The City shall require all residential development to utilize these ERC's in their calculation of water needs when developing. Outdoor water use for Residential shall be calculated using the following formula: Turf grass: 3.2 ac-ft/irr-ac, Xeriscape: 1.43 ac-ft/irr-ac, Hardscape: no water requirement. High Density residential shall use the calculations in subsection C to calculate the water required for the development Nonresidential development shall use the calculations in subsection D to calculate the water requirement for the development. A.
Applicable to All Development: The City Council does hereby establish the preferred type of water acceptable to the City shall be shares or stock within an irrigation or water company or an approved water right in good standing by the State of Utah Engineers Office and capable of delivering water through the City's water distribution system via Weber Basin Water Conservancy District treatment.
1.
All Residential and Commercial Developments that have an approved site plan or subdivision that was approved by the City Council prior to April 19, 2022, shall be eligible to meet the water requirement via cash in lieu of shares. The share price shall be set as the cost of a Davis Weber Canal shares at that time which is forty-five thousand dollars ($45,000.00). Those requiring less than a full share shall be prorated based on increments of one (1) acre foot. Funds will be held by the City in the Water Fund and restricted for future water purchase.
2.
Redevelopments of residential and commercial properties with an existing water connection shall be eligible for a credit of their current water usage towards meeting the water transfer requirements. The credit will be based on the average yearly use of the prior four years' use.
3.
All Residential and Commercial Developments that are in areas of Riverdale City that have secondary water provided by Weber Basin Secondary Water or Pineview water systems and have a connection to the secondary water system that is sufficient to provide for all of the irrigation needs of the development shall only be required to provide water shares for the culinary water requirements. Should a developer choose to provide a private secondary water system for a development that provides for all of the irrigation needs of the development and the secondary system is approved by the Riverdale City Council, the development shall only be required to provide water shares for the culinary water requirements.
B.
Residential Subdivisions: A developer shall convey to the City water rights that have been customarily used on the property to be developed that are usable by and acceptable to the City to provide 0.30 acre feet per ERC or part thereof within a residential subdivision. The 0.30 acre feet shall meet the requirement for indoor use. Outdoor use shall be calculated with the following formula: Turf grass: 3.2 ac-ft/irr-ac, Xeriscape: 1.43 ac-ft/irr-ac, and Hardscape: no water requirement per ERC. Open space, parks, common areas, other landscaped areas, etc. shall be calculated using the following formula: Turf grass: 3.2 ac-ft/irr-ac, Xeriscape: 1.43 ac-ft/irr-ac, and Hardscape. The developer would also have the option to contract with Riverdale City's water consultant firm to complete a study for the individual site and determine the water requirement In the event there are no owner water shares or rights on property to be developed, the developer shall obtain and convey water shares or rights acceptable and usable by the City as determined by the City Public Works Director.
C.
High Density Residential Subdivisions: A developer shall convey to the City water shares or rights that have been customarily used on the property to be developed that are useable by and acceptable to the city to provide 0.30 acre feet per ERC The developer would also have the option to contract with Riverdale City's water consultant firm, at the developers cost, to complete a study for the individual site and determine the water requirement. An adjustment to the standard rate may be made if the study warrants a different amount. Should the development use more than the conveyed amount of water for two (2) consecutive years the development shall be required to purchase additional water to meet the demand. In the event there are no owner water rights on the property to be developed, the developer shall obtain and convey water rights acceptable and usable by Riverdale City as determined by the Public Works Director. Water rights may be purchased from Weber Basin Water Conservancy District through a development agreement and contract with Riverdale City, provided the district has shares available for purchase. The developer is not required to convey water rights for acreage of asphalt or other non-permeable surfaces.
D.
Nonresidential Subdivisions: A developer shall convey to the City water shares or rights that have been customarily used on the property to be developed that are usable by and acceptable to the City to provide 3.2 acre feet for each irrigable acre or part thereof within a nonresidential subdivision. Developments using Xeriscape as defined by the cities landscape ordinance, drip irrigation and smart clocks shall convey water rights based on the following calculations: Turf grass: 3.2 ac-ft/irr-ac, Xeriscape: 1.43 acft/irr-ac, and Hardscape. Mixed use landscaping shall be calculated on a percentage, based on the quantity of the aforementioned calculations. The developer shall also convey the actual calculated indoor usage plus sixteen percent (16%) to account for system losses. These calculations will be used to determine the developments water requirement. Should the development use more than the conveyed amount of water for two (2) consecutive years the development shall be required to purchase additional water to meet the demand. In the event there are no owner water rights on property to be developed, the developer shall obtain and convey water rights acceptable and usable by Riverdale City as determined by the Public Works Director. The developer is not required to convey water rights for acreage of asphalt or other non-permeable surfaces.
(Ord. 904, 9-18-2018; amd. Ord. 927, 11-4-2020; Ord. 952, 6-6-2022; Ord. 957, 10-18-2022; Ord. 969, 9-5-2023; Ord. 976, 1-2-2024)