Aquatic resources in arid lands: Issues and opportunities

Sallenave, Rossana; Cowley, David E.

doi:10.1007/s00027-004-0006-4

Cited by 3 publications

(1 citation statement)

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“…Surface water‐groundwater interaction is an important process in riparian zones, with relevance to water budgets, biogeochemical, and ecological processes (Sophocleous 2002; Tidwell et al 2004; Sallenave and Cowley 2004; National Research Council 2002). Surface water‐groundwater interaction in riparian zones is also important in the context of water management during low flow periods to meet in‐stream flow requirements for endangered species (U.S. Army Corps of Engineers [USACE], U.S. Bureau of Reclamation [USBR], and New Mexico Interstate Stream Commission [NMSIC] 2007).…”

Section: Introductionmentioning

confidence: 99%

Incorporating Groundwater‐Surface Water Interaction into River Management Models

Valerio

Rajaram²,

Zagona

2010

Groundwater

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Accurate representation of groundwater-surface water interactions is critical to modeling low river flows in the semi-arid southwestern United States. Although a number of groundwater-surface water models exist, they are seldom integrated with river operation/management models. A link between the object-oriented river and reservoir operations model, RiverWare, and the groundwater model, MODFLOW, was developed to incorporate groundwater-surface water interaction processes, such as river seepage/gains, riparian evapotranspiration, and irrigation return flows, into a rule-based water allocations model. An explicit approach is used in which the two models run in tandem, exchanging data once in each computational time step. Because the MODFLOW grid is typically at a finer resolution than RiverWare objects, the linked model employs spatial interpolation and summation for compatible communication of exchanged variables. The performance of the linked model is illustrated through two applications in the Middle Rio Grande Basin in New Mexico where overappropriation impacts endangered species habitats. In one application, the linked model results are compared with historical data; the other illustrates use of the linked model for determining management strategies needed to attain an in-stream flow target. The flows predicted by the linked model at gauge locations are reasonably accurate except during a few very low flow periods when discrepancies may be attributable to stream gaging uncertainties or inaccurate documentation of diversions. The linked model accounted for complex diversions, releases, groundwater pumpage, irrigation return flows, and seepage between the groundwater system and canals/drains to achieve a schedule of releases that satisfied the in-stream target flow.

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Section: Introductionmentioning

confidence: 99%