NDLI: Augmentation of seasonal low stream flows by artificial recharge in the Spokane Valley-Rathdrum Prairie aquifer of Idaho and Washington, USA

Content Provider	Springer Nature Link
Author	Barber, Michael E. Hossain, Akram Covert, John J. Gregory, Guy J.
Copyright Year	2009
Abstract	Conjunctive management of surface water and groundwater requires sophisticated spatial and temporal analysis. In situations involving multiple jurisdictions such as state boundaries, management problems are magnified due to often conflicting regulations and policies. A transient MODFLOW model of the Spokane Valley-Rathdrum Prairie (SVRP) aquifer/river system mutually accepted by both the states of Idaho and Washington, USA, was used to evaluate regional solutions to potential water shortages through the use of strategically placed infiltration basins or injection wells. Artificial recharge of the SVRP aquifer was simulated using diversions from Lake Pend Oreille during winter periods when flows are high and excess water is available. Alternative locations for potential wells and detention basins were examined. Lag times for the water to impact stream/groundwater interaction areas along the Spokane River were evaluated to assess the potential for augmenting stream flows from July through September. Results indicated that the aquifer could be used to improve low-flow season streamflow values utilizing both infiltration basins and injection wells with winter surface water diversions. Depending on the location, as much as 30% of the winter diversion rate could be lagged to improve summer flows at the Spokane gage. Thus, a regional mitigation strategy is scientifically feasible.La gestion conjointe des eaux de surface et des eaux souterraines nécessite une analyse spatio-temporelle détaillée. Dans des situations impliquant plusieurs juridictions telles que des limites d’état, les problèmes de gestion sont souvent amplifiés liés à des règlements et des politiques de l’eau pouvant être conflictuels. Un modèle transitoire développé sous MODFLOW pour le système aquifère/rivière de la vallée de Spokane et l’aquifère de Rathrum Prairie (SVRP) accepté par les états de l’Idaho et de Washington (Etats-Unis d’Amérique) a été utilisé afin d’évaluer les solutions à un niveau régional vis-à-vis de problèmes de manque d’eau, en ayant recours à des basins d’infiltration ou des puits d’injection. La recharge artificielle de l’aquifère SVRP a été simulée intégrant des déviations des flux du Lac Pend Oreille pendant les périodes hivernales lorsque de l’eau en excès est potentiellement disponible. Plusieurs emplacements concernant des puits d’injection et des basins de rétention ont été examinés. Les temps nécessaires pour qu’un impact sur les interactions rivière/eaux souterraines le long de la rivière Spokane ont été analysés afin d’évaluer l′augmentation potentielle des débits d’étiage du cours d’eau pour la période comprise entre les mois de juillet et de septembre. Les résultats montrent que l’aquifère peut être utilisé pour améliorer les débits d’étiage du cours d’eau en ayant recours à des bassins d’infiltration et à des puits d’injection en ayant recours à des déviations d’eau du lac en période hivernale. Jusqu’à 30% des flux déviés au cours de cette période selon les emplacements, pourraient contribuer aux débits d’étiage au niveau de la station de jaugeage de la rivière Spokane. Ainsi, une stratégie de gestion des eaux au niveau régional est possible du point de vue scientifique.El manejo conjuntivo del agua superficial y subterránea requiere un análisis espacial y temporal complejo. En situaciones que involucran jurisdicciones múltiples tales como límites entre estados, los problemas de manejos se magnifican debido a políticas y regulaciones a menudo conflictivas. Se usó un modelo MODFLOW transitorio del sistema acuífero / río del Spokane Valley-Rathdrum Prairie (SVRP) mutuamente aceptado por los estados de Idaho y Washington, EEUU para evaluar soluciones regionales a una escasez potencial de agua a través del uso de cuencas de infiltración estratégicamente ubicadas o pozos de inyección. La recarga artificial del acuífero SVRP fue simulada usando desvíos provenientes del Lago Pend Oreille durante períodos invernales cuando los flujos son altos y hay un exceso de agua potencialmente disponible. Se examinaron sitios alternativos para pozos potenciales y cuencas de retención. Se evaluaron los tiempos de retardo del agua para impactar áreas de la interacción curso / aguas subterráneas a lo largo del Río Spokane para evaluar el potencial aumento del flujo de la corriente desde Julio hasta el final de Septiembre. Los resultados indicaron que el acuífero podría ser usado para mejorar los valores de flujo de base estacionales utilizando tanto cuencas de infiltración como pozos de inyección con desvíos invernales de aguas superficiales. Dependiendo del sitio, tanto como hasta el 30% del ritmo de los desvíos invernales podrían ser retardados para mejorar los flujos del verano en la estación de aforos de Spokane. Así, una estrategia de mitigación regional es científicamente factible.地表水和地下水的联合管理需要复杂的时空分析。在多个管辖权之下, 如州界处, 管理问题常因不同的法规和政策而愈加复杂。利用同时被美国爱达荷州和华盛顿州接受的Spokane Valle-Rathdrum Prairie含水层 (SVRP) 含水层/河流系统的非稳定流MODFLOW模型, 评价通过战略意义上布置的入渗盆地或注入井解决潜在缺水问题的区域解决方法。调用Pend Oreille 湖冬季流量较大时多余的水作为补给水源进行SVRP含水层的人工补给模拟。考察了不同井和滞留盆地位置。通过估算补给水影响沿Spokane河的河水/地下水相互作用区域的延迟时间, 评价七月到九月间河流流量增加的潜力。结果表明, 可通过入渗盆地和注入井将冬季地表水调水补入含水层来增加低径流季节的河流流量。因位置不同, 最多30%的冬季调水量可通过延迟来提高Spokane水文站的夏季流量。因此, 区域缓解策略是科学可行的。A gestão integrada das águas superficiais e subterrâneas exige uma sofisticada análise espacial e temporal. Em situações que envolvam múltiplas jurisdições, tais como os limites estaduais, os problemas de gestão são muitas vezes ampliados, devido a regulamentos e políticas conflituantes. Um modelo MODFLOW em regime transitório do sistema aquífero/rio Vale Spokane-Pradaria de Rathdrum (SVRP), mutuamente aceite por ambos os Estados de Idaho e Washington, EUA, foi utilizado para avaliar as soluções regionais com potencial escassez da água, através da utilização de bacias de infiltração ou poços de injecção estrategicamente localizados. A recarga artificial do aquífero SVRP foi simulada usando desvios do Lago Pend Oreille durante os períodos de inverno, quando os fluxos são elevados e o excesso de água se encontra potencialmente disponível. Localizações alternativas para potenciais poços e bacias de retenção foram avaliadas. Foram avaliados igualmente os intervalos de tempo necessários para que se fizessem sentir os impactes da água nas áreas de interacção curso de água/águas subterrâneas ao longo do Rio Spokane, de modo a estimar o potencial de aumento dos fluxos do curso de água desde Julho até Setembro. Os resultados indicaram que o aquífero pode ser utilizado para melhorar os valores de caudal dos fluxos reduzidos sazonais, utilizando, quer bacias de infiltração, quer poços de injecção com águas superficiais no período de inverno. Dependendo da localização, tanto como 30% das taxas de desvio de inverno poderiam ser desfasadas para melhorar os fluxos de verão na estação hidrométrica de Spokane. Nestas condições, uma estratégia regional de mitigação é cientificamente possível.
Starting Page	1459
Ending Page	1470
Page Count	12
File Format	PDF
ISSN	14312174
Journal	Hydrogeology Journal
Volume Number	17
Issue Number	6
e-ISSN	14350157
Language	Portuguese
Publisher	Springer-Verlag
Publisher Date	2009-04-30
Publisher Institution	International Association of Hydrogeologists
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	MODFLOW Artificial recharge Aquifer storage and recovery Injection wells USA Waste Water Technology Water Pollution Control Water Management Aquatic Pollution Geology Hydrogeology
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences Water Science and Technology

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Spokane Valley-Rathdrum Prairie aquifer, Washington and Idaho

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