Aquifer geometry, lithology, and water levels in the Anza–Terwilliger area—2013, Riverside and San Diego Counties, California

Landon, Matthew K.; Morita, Andrew; Nawikas, Joseph M.; Christensen, Allen H.; Faunt, Claudia C.; Langenheim, Victoria E.

doi:10.3133/sir20155131

Cited by 3 publications

(5 citation statements)

References 9 publications

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“…The land that directly drains to the groundwater basin footprint (referred to as the BCM recharge basin) includes the Upper Cahuilla and Lower Cahuilla Creek and the Nance Canyon subbasins (hydrologic unit code-12: U.S. Geological Survey et al 2013) (bounded by red line in Figure 1). The BCM recharge basin is consistent with groundwater footprints from previous studies (Landon et al 2015;Danielson 2018), and slightly larger than the footprint from Moyle (1976) (Figure 1). Locally the Nance Canyon area is also known as Terwilliger Valley.…”

Section: Study Areasupporting

confidence: 88%

“…The BCM recharge basin is consistent with groundwater footprints from previous studies (Landon et al. 2015; Danielson 2018), and slightly larger than the footprint from Moyle (1976) (Figure 1). Locally the Nance Canyon area is also known as Terwilliger Valley.…”

Section: Introductionsupporting

confidence: 88%

“…There are no contemporary estimates of natural recharge or runoff to the basin and Landon et al. (2015) documented only previous historical estimates (CA DWR 1956; Moyle 1976; Woolfenden and Bright 1988).…”

Section: Introductionmentioning

confidence: 99%

“…The characteristics and water budget of this groundwater basin are not well understood and are threatened by increasing water use and potential changes in water availability related to climate change. There are no contemporary estimates of natural recharge or runoff to the basin and Landon et al (2015) documented only previous historical estimates (CA DWR 1956;Moyle 1976; Woolfenden and Bright 1988).…”

Section: Introductionmentioning

confidence: 99%

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A Basin‐Scale Approach to Estimating Recharge in the Desert: Anza‐Cahuilla Groundwater Basin, CA

Stern

Flint

Christensen

2021

J American Water Resour Assoc

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The Anza‐Cahuilla groundwater basin located mainly in the semi‐arid headwaters of the Santa Margarita River watershed in southern California is the principle source of groundwater for a rural disadvantaged community and two Native American Tribes, the Ramona Band of Cahuilla and the Cahuilla. Groundwater in the study area is derived entirely from precipitation and managing groundwater sustainably requires an accurate assessment of the water balance components, yet long‐term estimates do not exist. Demand for groundwater in the region has increased and groundwater quality has decreased due to population growth and increased irrigated cropland. To characterize monthly long‐term natural recharge and runoff estimates, a physically‐based water balance model (Basin Characterization Model) was locally calibrated and validated using nearby streamgages and published estimates of climatic and hydrologic variables. The average modeled annual recharge and runoff from 1981 to 2010 was 5.4 × 106 and 1.2 × 107 m3, respectively, for the study area. Recharge and runoff do not reliably occur in large amounts every year and recharge rarely occurs in the groundwater basin footprint. These long‐term estimates can be used by water managers, stakeholders, and Native American Tribes to develop plans for sustainable management of future water resources, and as inputs to a three‐dimensional groundwater model.

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Section: Study Areasupporting

confidence: 88%

Section: Introductionsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Basin‐Scale Approach to Estimating Recharge in the Desert: Anza‐Cahuilla Groundwater Basin, CA

Stern

Flint

Christensen

2021

J American Water Resour Assoc

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“…In addition, faults and artificial structures also play important roles in permeability, acting either as a barrier slowing the flow of water or as conduits between aquifers (e.g., Pujades et al 2012, Font-Capo et al 2015. Although the relationship between faults and aquifer geometry has already been established for several areas, such as southern California, USA (Landon et al 2015) and southeastern Tunisia (Chihi et al 2015), more study cases are needed to fully understand the role of faults on aquifer properties.…”

Section: Introductionmentioning

confidence: 99%

Use of hydrogeophysical data to determine the role of faults in the geometry of the Barreiras Aquifer, Brazil

et al. 2019

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Characterizing the geometry of an aquifer is fundamental for determining the locations of more productive wells. Commonly, flow and hydraulic parameters, such as transmissivity, are related to the thickness of the aquifer, which emphasizes the importance of regional hydrogeophysical characterization. Shuttle radar imagery, well profiles and geoelectric models (thickness x resistivity) from sixteen soundings were used to identify Neogene faults in the Barreiras Aquifer in the Catu River basin, northeastern Brazil. The joint analysis of the geomorphological data enabled the development of a synthesis map characterizing morphotectonic alignments that are mainly N50º-60ºE and N40º-60ºW trending. A number of these alignments were interpreted as faults based on 10 to 44 throws that were identified in the hydrogeophysical cross-sections.The highest values were located in the northeastern portion of the area, suggesting the direct association between saturated thickness and Neogene faults. Additionally, the geoelectric and hydraulic head data of the aquifer allowed the identification of the most promising sites for future water exploitation in the northeastern portion of the study area with transverse resistances equal to or greater than 40,000 Ohm.m. The geometry and transmissivity of the Barreiras Aquifer indicate that porous aquifers in structural highs could be controlled by faults.

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Application of electrical and electromagnetic data to delineate shallow aquifer zones: a case study of Vea catchment, Ghana

Okrah,

Appiah-Adjei,

Owusu-Nimo

et al. 2024

Arab J Geosci

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Aquifer geometry, lithology, and water levels in the Anza–Terwilliger area—2013, Riverside and San Diego Counties, California

Cited by 3 publications

References 9 publications

A Basin‐Scale Approach to Estimating Recharge in the Desert: Anza‐Cahuilla Groundwater Basin, CA

A Basin‐Scale Approach to Estimating Recharge in the Desert: Anza‐Cahuilla Groundwater Basin, CA

Use of hydrogeophysical data to determine the role of faults in the geometry of the Barreiras Aquifer, Brazil

Application of electrical and electromagnetic data to delineate shallow aquifer zones: a case study of Vea catchment, Ghana

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