Lower Washita - Water Resources Board - State of Oklahoma

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34 Lower Washita Regional Report Oklahoma Comprehensive Water Plan
Drinking Water Infrastructure Cost Summary As part of the public water provider analysis, regional cost estimates to meet system drinking water infrastructure needs over the next 50 years were prepared. While it is difficult to account for changes that may occur within this extended time frame, it is beneficial to evaluate, at least on the order-of-magnitude level, the long-range costs of providing potable water. Project cost estimates were developed for a selection of existing water providers, and then weighted to determine total regional costs. The OCWP method is similar to that utilized by the EPA to determine national drinking water infrastructure costs in 2007. However, the OCWP uses a 50-year planning horizon while the EPA uses a 20- year period. Also, the OCWP includes a broader spectrum of project types rather than limiting projects to those eligible for the Drinking Water State Revolving Fund program. While estimated costs for new reservoirs are not included, rehabilitation project costs for existing major reservoirs were applied at the regional level. More information on the methodology and cost estimates is available in the OCWP Drinking Water Infrastructure Needs Assessment by Region report. Provider System Category 1 Infrastructure Cost Summary Lower Washita Region Infrastructure Need (millions of 2007 dollars) Present - 2020 2021 - 2040 2041 - 2060 Total Period Small $375 $202 $36 $613 Medium $824 $933 $212 $1,969 Large $0 $0 $0 $0 Reservoir 2 $0 $7 $222 $229 Total $1,199 $1,142 $470 $2,811 1 Large providers are defined as those serving more than 100,000 people, medium systems as those serving between 3,301 and 100,000 people, and small systems as those serving 3,300 or fewer people. 2 The “reservoir” category refers specifically to rehabilitation projects. • Approximately $2.8 billion is needed to meet the projected drinking water infrastructure needs of the Lower Washita region over the next 50 years. The largest infrastructure costs are expected to occur within the next 20 years. • Distribution and transmission projects account for more than 75 percent of the providers’ estimated infrastructure costs, followed distantly by water treatment projects. • Medium-sized providers have the largest overall drinking water infrastructure costs. • Projects involving rehabilitation of existing reservoir comprise approximately eight percent of the total costs. Oklahoma Comprehensive Water Plan Lower Washita Regional Report 35
Page 2 and 3: The objective of the Oklahoma Compr
Page 4 and 5: Contents Introduction .............
Page 6 and 7: Lower Washita Regional Summary Syno
Page 8 and 9: Water Supply Options To quantify ph
Page 10 and 11: Water Supply Physical Water Availab
Page 12 and 13: Water Supply Availability Analysis
Page 14 and 15: The Canadian River aquifer consists
Page 16 and 17: Water Quality Water quality of the
Page 18 and 19: Water Quality Impairments A waterbo
Page 20 and 21: Surface Water Protection The Oklaho
Page 22 and 23: Water Quality Trends Study As part
Page 24 and 25: Water Demand Water needs in the Low
Page 26 and 27: Public Water Providers There are mo
Page 28 and 29: Public Water Providers/Retail Popul
Page 30 and 31: Provider SDWIS ID 1 County Public W
Page 32 and 33: Wholesale Water Transfers (2 of 2)
Page 34 and 35: Public Water Provider Water Rights
Page 36 and 37: OCWP Provider Survey Lower Washita
Page 40 and 41: Water Supply Options Limitations An
Page 42 and 43: those associated with municipalitie
Page 45 and 46: Oklahoma Comprehensive Water Plan D
Page 47 and 48: Median Historical Streamflow at the
Page 49 and 50: Aquifer Groundwater Resources - Aqu
Page 51 and 52: Monthly Demand Distribution by Sect
Page 53: Conservation Activities 1 Reliable
Page 56 and 57: Basin 15 Summary Synopsis • Wate
Page 58 and 59: Basin 15 Data & Analysis Surface Wa
Page 60 and 61: Water Demand • Basin 15’s water
Page 62 and 63: Gaps and Storage Depletions • Bas
Page 69 and 70: Aquifer Groundwater Resources - Aqu
Page 71 and 72: Monthly Demand Distribution by Sect
Page 73: Conservation Activities 1 Reliable
Page 76 and 77: Basin 21 Summary Synopsis • Wate
Page 78 and 79: Basin 21 Data & Analysis Surface Wa
Page 80 and 81: Water Demand • Basin 21’s water
Page 82 and 83: Gaps and Storage Depletions • Bas
Page 89 and 90:
Aquifer Groundwater Resources - Aqu
Page 91 and 92:
Monthly Demand Distribution by Sect
Page 93:
Conservation Activities 1 Reliable
Page 96 and 97:
Basin 23 Summary Synopsis • Wate
Page 98 and 99:
Basin 23 Data & Analysis Surface Wa
Page 100 and 101:
Water Demand • Basin 23’s water
Page 102 and 103:
Gaps and Storage Depletions • Bas
Page 104 and 105:
Glossary Acre-foot: volume of water
Page 106 and 107:
Nonpoint source (NPS): a source of
Page 108 and 109:
Waters of the state: all streams, l
Page 110 and 111:
Sources AMEC Earth & Environmental.
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Lower Washita - Water Resources Board - State of Oklahoma

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