Estimates of ground-water pumpage from the Yakima River Basin aquifer system, Washington, 1960-2000

Vaccaro, J.J.; Sumioka, S.S.

doi:10.3133/sir20065205

Cited by 9 publications

(31 citation statements)

References 4 publications

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“…Some of the farmers in YRB have permits to use supplemental groundwater during drought years. These farms are mainly perennial orchards and potentially contribute to 0-5% of basin-wide irrigation requirements during drought years (Vaccaro & Sumioka, 2006). In this study, we neglect the use of drought relief groundwater pumping because of a lack of accurate spatial information about the location of wells and the fact that many of the wells are outside of YRB's six major irrigation districts.…”

Section: Prorationratio Pr ð þ ¼ Wsai Totalirrigationentitlementsmentioning

confidence: 99%

When Should Irrigators Invest in More Water‐Efficient Technologies as an Adaptation to Climate Change?

Malek

Adam

Stöckle

et al. 2018

Water Resources Research

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The western U.S. is expected to experience more frequent and severe droughts as a result of climate change, with potentially large impacts on agricultural production and the economy. Irrigated farmers have multiple options for minimizing the impact of drought including switching to more efficient irrigation technologies. More efficient technologies that increase the fraction of the water available to the crop root zone would allow farmers to maintain current production levels with less water. However, these systems are capital intensive. The objective of this study is to explore when (and under what climatic conditions) it makes economic sense for farmers to invest in new irrigation systems. We examine this in the Yakima River Basin in Washington State of the U.S. We use VIC‐CropSyst, a large‐scale grid‐based modeling framework that mechanistically simulates hydrologic and agricultural processes. Water supply simulated by VIC‐CropSyst drives a river system and water management model (YAK‐RW). A computational platform was developed to perform the economic analysis for each grid cell, crop type, and future climate scenario separately, which allowed us to explore whether the implementation of more efficient irrigation systems would be economically viable. Our results indicate that investing in a more efficient irrigation system improves agricultural economy of the Yakima River Basin (9% −25%). We also show that at the farm level, more significant droughts can provide economic incentives for investment up to a point. For severe climate change projections, droughts become frequent and severe enough that economic benefits of improving water use efficiency do not exceed investment costs.

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Section: Prorationratio Pr ð þ ¼ Wsai Totalirrigationentitlementsmentioning

confidence: 99%

When Should Irrigators Invest in More Water‐Efficient Technologies as an Adaptation to Climate Change?

Malek

Adam

Stöckle

et al. 2018

Water Resources Research

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“…The average potential water use for each crop type was estimated by operating DPM for WYs 1950-2003 for each crop type and averaging the daily values of potential plantwater use (soil moisture non-limiting). These average values were originally calculated by Vaccaro and Sumioka (2006) as part of estimating ground-water pumpage from the aquifer system. The estimated application rates for the ground-water irrigated crops ranged from 15.0 to 38.9 in/yr.…”

Section: Wa19-0052_fig06mentioning

confidence: 99%

“…A source of recharge that was not simulated by the models is that from septic-system drainfields. Vaccaro and Sumioka (2006) estimated ground-water pumpage from the aquifer system for the Public Water Supply (PWS) systems and for self-supplied domestic households, which was aggregated by the 2000 census blocks of the U.S. Census Bureau (2004). These estimates were annual values for pumpage by the PWS systems, beginning in 1960, or later if the system was established after 1960, and the values were for 5-year increments, beginning in 1960 for the domestic pumpage.…”

Section: Assumptions and Considerations In Estimating Rechargementioning

confidence: 99%

“…These estimates were annual values for pumpage by the PWS systems, beginning in 1960, or later if the system was established after 1960, and the values were for 5-year increments, beginning in 1960 for the domestic pumpage. Vaccaro and Sumioka (2006) also estimated the monthly distribution of the PWS and domestic pumpage based on a percentage of the annual value; the percentages were calculated using all available data. The months with the lowest percentage of annual pumpage were November through February, and the values ranged from 4.8 to 5.4 percent.…”

Section: Assumptions and Considerations In Estimating Rechargementioning

confidence: 99%

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Estimates of ground-water recharge to the Yakima River Basin aquifer system, Washington, for predevelopment and current land-use and land-cover conditions

Vaccaro¹,

Olsen²

2007

Scientific Investigations Report

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Two models were used to estimate groundwater recharge to the Yakima River Basin aquifer system, Washington for predevelopment (estimate of natural conditions) and current (a multi-year, 1995-2004, composite) land-use and landcover conditions. The models were the Precipitation-Runoff Modeling System (PRMS) and the Deep Percolation Model (DPM) that are contained in the U.S. Geological Survey's Modular Modeling System. Daily values of recharge were estimated for water years 1950-98 using previously developed PRMS-watershed models for four mainly forested upland areas, and for water years 1950-2003 using DPM applied to 17 semiarid to arid areas in the basin. The mean annual recharge under predevelopment conditions was estimated to be about 11.9 in. or 5,450 ft 3 /s (about 3.9 million acre-ft) for the 6,207 mi 2 in the modeled area. In the modeled areas, recharge ranged from 0.08 in. (1.2 ft 3 /s) to 34 in. (2,825 ft 3 /s). About 97 percent of the recharge occurred in the 3,667 mi 2 area included in the uplandarea models, but much of this quantity is not available to recharge the bedrock hydrogeologic units. Only about 1.0 in., or 187 ft 3 /s (about 0.14 million acre-ft), was estimated to occur in the 2,540 mi 2 area included in the semiarid to arid lowland modeled areas. The mean annual recharge to the aquifer system under current conditions was estimated to be about 15.6 in., or 7,149 ft 3 /s (about 5.2 million acre-ft). The increase in recharge is due to the application of irrigation water to croplands. The annual quantity of irrigation was more than five times the annual precipitation for some of the modeled areas. Mean annual actual evapotranspiration was estimated to have increased from predevelopment conditions by more than 1,700 ft 3 /s (about 1.2 million acre-ft) due to irrigation.

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“…Groundwater pumping in the Yakima River Basin was estimated as part of this study for eight categories of use during 1960-2001(Vaccaro and Sumioka, 2006 Methods of data collection, pumpage estimates, reliability of the estimates, and a comparison with appropriated quantities are described by Vaccaro and Sumioka (2006) and Vaccaro and others (2009). By the end of calendar year 1960, total annual pumpage in the basin, excluding standby/reserve pumpage, was about 116,000 acre-ft (160 ft³/s).…”

Section: Model Inputsmentioning

confidence: 99%

Particle tracking for selected groundwater wells in the lower Yakima River Basin, Washington

Bachmann¹

2015

Scientific Investigations Report

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Estimates of ground-water pumpage from the Yakima River Basin aquifer system, Washington, 1960-2000

Abstract: Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (NAVD 88). Horizontal coordinate information is referenced to the North American Datum of 1983 (NAD 83). Altitude, as used in this report, refers to distance above the vertical datum.

Cited by 9 publications

References 4 publications

When Should Irrigators Invest in More Water‐Efficient Technologies as an Adaptation to Climate Change?

When Should Irrigators Invest in More Water‐Efficient Technologies as an Adaptation to Climate Change?

Estimates of ground-water recharge to the Yakima River Basin aquifer system, Washington, for predevelopment and current land-use and land-cover conditions

Particle tracking for selected groundwater wells in the lower Yakima River Basin, Washington

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