Water Budgets for Coeur d'Alene Lake, Idaho, Water Years 2000-2005

Maupin, Molly A.; Weakland, Rhonda J.

doi:10.3133/sir20095184

Cited by 4 publications

(8 citation statements)

References 2 publications

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“…As irrigation is typically limited to May until the end of September, however, annual consumptive use from irrigation was only divided by five to determine monthly consumptive use. A return flow was estimated to account for the fact that most withdrawals are returned to the lake through groundwater recharge from irrigation, run‐off or septic system infiltration (Maupin & Weakland ).…”

Section: Methods: Model Developmentmentioning

confidence: 99%

“…That perception has been slowly changing in recent years, however, due to, among other things, a large influx of people to the region. The United States Geological Survey (USGS) estimated that there was an 88% increase in the population in the Coeur d'Alene Lake region between 1980 and 2006 (Maupin & Weakland ). While that growth has been mostly residential and commercial, ‘[w]ater managers and private landowners [in the basin] are concerned about the effects of rapid growth and increasing water demands from the lake on the available surface‐water supplies’ (Maupin & Weakland ).…”

Section: Introductionmentioning

confidence: 99%

“…The United States Geological Survey (USGS) estimated that there was an 88% increase in the population in the Coeur d'Alene Lake region between 1980 and 2006 (Maupin & Weakland ). While that growth has been mostly residential and commercial, ‘[w]ater managers and private landowners [in the basin] are concerned about the effects of rapid growth and increasing water demands from the lake on the available surface‐water supplies’ (Maupin & Weakland ). Of particular concern is the possibility that increases in consumptive water use will preclude the long‐standing target summertime elevation of 2128 feet (648.6 m; Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Further, as seen in Figure , the groundwater interaction between the lake and the SVRP aquifer only comprises a small portion of the total groundwater interaction around the lake. Thus, as the USGS put it ‘[m]ore analysis and data collection is needed to more accurately determine the amount of water that the SVRP aquifer gains from Coeur d'Alene Lake….’ (Maupin & Weakland ).…”

mentioning

confidence: 99%

“…As noted by the USGS, the groundwater interactions between the lake and surrounding lands are difficult to estimate on the basis of available data (Maupin & Weakland ). In that study, the USGS expressly disclaimed any attempt to estimate groundwater flow in/out of the lake, instead focusing only on estimating seepage from the lake into the Rathdrum‐Prairie (SRVP) Aquifer (Maupin & Weakland ). The USGS settled on a rate of 230 ft 3 s −1 (6.5 m 3 s −1 ), based on Wyman (), who inventoried seepage estimates from various sources to estimate whether or not heavy metals may infiltrate into the aquifer from Coeur d'Alene Lake (Wyman ).…”

mentioning

confidence: 99%

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Development of a system‐based water balance model to assess interrelated physical and anthropogenic constraints in lake and reservoir watersheds, applied to Coeur d'Alene Lake, Idaho, USA

Hedden-Nicely

Fiedler

2017

Lakes & Reservoirs

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This study presents a methodology for the development of a water balance model that uses publicly available data in a manner useful to water scientists and managers who manage complex lake and reservoir watersheds. The approach was applied to Coeur d'Alene Lake, a naturally occurring lake that is controlled by a dam located on its outlet (Spokane River) in North Idaho, USA. As in many other areas, the region surrounding Coeur d'Alene Lake has experienced high rates of population growth in recent years, and there is concern that, as consumptive water use increases, the lake will eventually not be able to be managed to simultaneously maintain the federally mandated minimum flow requirements in the Spokane River and also maintain the target summertime elevation of 2128 feet (648.6 m) for recreation and hydropower purposes. The complexity caused by the competing uses at Coeur d'Alene Lake makes it an excellent case study for similarly characterized watersheds. Both a natural flow model and regulated elevation model were developed, and sensitivity analysis was conducted on both models to evaluate which lake processes have the greatest effects on lake elevation, thereby requiring the most attention. A ‘low‐flow’ scenario was modelled to demonstrate the usefulness of the model and to inform Coeur d'Alene Lake regional stakeholders regarding the interrelationship between current water policy and the lake's physical behaviour under stressed conditions that could result from climate change. Model result indicates that, while lake elevation may be maintained at the summertime elevation of 2128 feet (648.6 m) under a low‐flow scenario, the outflows in the Spokane River start to approach the minimum flow requirements in the month of August. The developed approach is useful where publicly available data exist and allows for economic, yet rigorous, water resources systems evaluation without requiring significant field data collection.

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Section: Methods: Model Developmentmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Development of a system‐based water balance model to assess interrelated physical and anthropogenic constraints in lake and reservoir watersheds, applied to Coeur d'Alene Lake, Idaho, USA

Hedden-Nicely

Fiedler

2017

Lakes & Reservoirs

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Water Supply Processes Are Responsible for Significant Nitrogen Fluxes Across the United States

Flint

Ascott

Gooddy

et al. 2022

Global Biogeochemical Cycles

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Excessive nutrient concentrations within fresh waters are a globally persistent problem. Developing effective nutrient management strategies requires improvements to nitrogen (N) mass balances, including the identification and quantification of previously unrecognized anthropogenic N fluxes. Using publicly available data, we establish that freshwater abstractions from both surface waters and groundwaters, alongside watermains leakage from public distribution networks, are responsible for significant nitrate‐N (NO3‐N) fluxes across the contiguous United States. Nationally, freshwater abstraction temporarily retains 417 (min‐max: 190–857) kt NO3‐N yr−1, equivalent to 21% of pastureland N uptake and 2% of previous global abstraction‐N flux estimates. Fluxes due to irrigation, thermoelectric power, and public water supply collectively account for 87% of this total. We find large intercounty variation in area‐normalized abstraction fluxes (min‐max: 0–8,267 kg NO3‐N km−2 yr−1), with eastern regions generally associated with larger fluxes. Watermains leakage returns 7 (min‐max: 6.3–7.7) kt NO3‐N yr−1 back to the environment, equivalent to 13% of NO3‐N initially abstracted for public supply and 1.3% of previous global leakage flux estimates. Our analyses reveal inter‐county variations in area‐normalized leakage fluxes (min‐max: 0–576 kg NO3‐N km−2 yr−1), with this flux exceeding other major N inputs (agricultural N fertilizer) in some urbanized and coastal counties, highlighting their importance in these areas. The local and national importance of these fluxes has implications for policy makers and water resource managers aiming to better manage the impacts of N within the environment and calls for their inclusion in both US and global N budgets.

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Watermains Leakage and Outdoor Water Use Are Responsible for Significant Phosphorus Fluxes to the Environment Across the United States

Flint

Ascott

Gooddy

et al. 2023

Global Biogeochemical Cycles

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Water Budgets for Coeur d'Alene Lake, Idaho, Water Years 2000-2005

Cited by 4 publications

References 2 publications

Development of a system‐based water balance model to assess interrelated physical and anthropogenic constraints in lake and reservoir watersheds, applied to Coeur d'Alene Lake, Idaho, USA

Development of a system‐based water balance model to assess interrelated physical and anthropogenic constraints in lake and reservoir watersheds, applied to Coeur d'Alene Lake, Idaho, USA

Water Supply Processes Are Responsible for Significant Nitrogen Fluxes Across the United States

Watermains Leakage and Outdoor Water Use Are Responsible for Significant Phosphorus Fluxes to the Environment Across the United States

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