Comparison of groundwater flow in Southern California coastal aquifers

Hanson, Randall T.; Izbicki, John A.; Reichard, Eric G.; Edwards, Brian; Land, Michael; Martin, Peter M.

doi:10.1130/2009.2454(5.3)

Cited by 35 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The groundwater system consists of a shallow, unconfined aquifer and a deeper, regional confined aquifer (Anders et al, 2013). Both of these aquifers are composed of coastal sediments that progressively filled in the pull-apart basin formed by regional faulting (Keller and Ward, 2001) due to changes in sea-level and uplift over geological time (Hanson et al, 2009). Although the groundwater flow characteristics and pathways are under-constrained, the flow direction is generally westward, and recharge to the regional system is assumed to occur to the east of the wells sampled for this study near the transition from steep volcanic surficial geology to more permeable sediments (Flint et al, 2012;Seltzer et al, 2019b).…”

Section: Overview Of δ 40 Ar and Hydrogeology In San Diego Groundwater Systemmentioning

confidence: 99%

The triple argon isotope composition of groundwater on ten-thousand-year timescales

Seltzer

Krantz

et al. 2021

Chemical Geology

View full text Add to dashboard Cite

This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

show abstract

Section: Overview Of δ 40 Ar and Hydrogeology In San Diego Groundwater Systemmentioning

confidence: 99%

The triple argon isotope composition of groundwater on ten-thousand-year timescales

Seltzer

Krantz

et al. 2021

Chemical Geology

View full text Add to dashboard Cite

show abstract

“…Marine inundation as a result of SLR will shift the coastline landward, erode beaches, accelerate cliff failure, degrade sensitive coastal habitats, and damage coastal infrastructure and humans [2,[12][13][14][15]. SLR can also contribute to the degradation of coastal aquifers that have already been under pressure in California over the last century due to excessive water extraction and persistent, severe drought [16][17][18][19]. Saltwater intrusion into fresh water aquifers in California's coastal regions has been attributed predominantly to ground water overdraft, especially in southern California [16,17,20,21].…”

Section: Introductionmentioning

confidence: 99%

“…SLR can also contribute to the degradation of coastal aquifers that have already been under pressure in California over the last century due to excessive water extraction and persistent, severe drought [16][17][18][19]. Saltwater intrusion into fresh water aquifers in California's coastal regions has been attributed predominantly to ground water overdraft, especially in southern California [16,17,20,21]. However, recent studies demonstrate that SLR could also contribute to saltwater intrusion in coastal regions by raising the interface between intruding saltwater and overlying fresh water [14,22].…”

Section: Introductionmentioning

confidence: 99%

Compound Inundation Impacts of Coastal Climate Change: Sea-Level Rise, Groundwater Rise, and Coastal Precipitation

Rahimi

Tavakol-Davani

Graves

et al. 2020

Water

View full text Add to dashboard Cite

The importance of considering the compound effects of multiple hazards has increased in recent years due to their catastrophic impacts on human lives and property. Compound effects correspond to events with multiple concurrent or consecutive drivers, e.g., heavy storms, coastal flooding, high tides, and sea level rise (SLR). There is a recent evidence on inundation caused by SLR-driven groundwater rise, and there is a distinct knowledge gap in understanding the compound inundation effects of this phenomenon considering the important hydrologic and hydraulic considerations under compound events. To fill this knowledge gap, we developed a novel analytical framework to understand the movements of the surface flow under typical precipitation events considering their interaction with uprising groundwater and SLR in a coastal watershed located in Oakland Flatlands, CA, USA, home to several disadvantaged communities. This modelling approach simulates the dynamics of compound flooding in two dimensions of the earth surface in a fine resolution, which is critical for devising proper flood management strategies. The reason to focus on disadvantaged coastal communities is that such communities typically encounter disproportionate environmental injustices due to the lack of sufficient drainage capacity in their infrastructure. Our results show that by considering the compound effect of SLR, groundwater inundation and precipitation flooding, the drainage capacity of infrastructure will be substantially exceeded, such that over 700 acres of the built infrastructure could be flooded. This is a considerable increase compared to scenarios that do not consider compound effect, or scenarios that consider inappropriate combinations of driving factors. In sum, our results highlight the significance of considering compound effects in the coastal inundation analyses, with a particular emphasis on the role of groundwater rise.

show abstract

“…Both climate change and variability along with increased human demand with potential land use changes will affect the distributions of supply and demand components [ Vörösmarty et al , 2010; Aerts and Droogers , 2004] and sustainable water development [ Scanlon et al , 2006] throughout the world's regional aquifers. Recent studies [ Hanson et al , 2002, 2004, 2006, 2009; Gurdak et al , 2007, 2009; Kumar and Duffy , 2009] have identified quasiperiodic cycles in hydrologic time series of precipitation, groundwater, and streamflow that appear to correspond to quasiperiodic climatic forcings such as ENSO, NAMS, PDO, and AMO [ Dettinger et al , 1998; Gurdak et al , 2009]. Additional recent studies also have indicated that climate change has started to affect the streamflow in regional watersheds of North America such as the Sierra Nevada and the Rocky Mountains [ Stewart et al , 2004, 2005; Milly et al , 2005; Barnett et al , 2008; Das et al , 2009; Gray and McCabe , 2010], and has affected groundwater recharge such as in Sierra Nevada watersheds [ Earman and Dettinger , 2008; J. L. Huntington and R. G. Niswonger, Role of surface and groundwater interactions on projected base flows in snow dominated regions: An integrated modeling approach, submitted to Water Resources Research , 2011] that provide runoff and recharge to the regional aquifers of the Central Valley, California.…”

Section: Introductionmentioning

confidence: 99%

A method for physically based model analysis of conjunctive use in response to potential climate changes

Hanson

Flint

Dettinger

et al. 2012

Water Resources Research

View full text Add to dashboard Cite

[1] Potential climate change effects on aspects of conjunctive management of water resources can be evaluated by linking climate models with fully integrated groundwatersurface water models. The objective of this study is to develop a modeling system that links global climate models with regional hydrologic models, using the California Central Valley as a case study. The new method is a supply and demand modeling framework that can be used to simulate and analyze potential climate change and conjunctive use. Supplyconstrained and demand-driven linkages in the water system in the Central Valley are represented with the linked climate models, precipitation-runoff models, agricultural and native vegetation water use, and hydrologic flow models to demonstrate the feasibility of this method. Simulated precipitation and temperature were used from the GFDL-A2 climate change scenario through the 21st century to drive a regional water balance mountain hydrologic watershed model (MHWM) for the surrounding watersheds in combination with a regional integrated hydrologic model of the Central Valley (CVHM). Application of this method demonstrates the potential transition from predominantly surface water to groundwater supply for agriculture with secondary effects that may limit this transition of conjunctive use. The particular scenario considered includes intermittent climatic droughts in the first half of the 21st century followed by severe persistent droughts in the second half of the 21st century. These climatic droughts do not yield a valley-wide operational drought but do cause reduced surface water deliveries and increased groundwater abstractions that may cause additional land subsidence, reduced water for riparian habitat, or changes in flows at the Sacramento-San Joaquin River Delta. The method developed here can be used to explore conjunctive use adaptation options and hydrologic risk assessments in regional hydrologic systems throughout the world.

show abstract

Comparison of groundwater flow in Southern California coastal aquifers

Cited by 35 publications

References 0 publications

The triple argon isotope composition of groundwater on ten-thousand-year timescales

The triple argon isotope composition of groundwater on ten-thousand-year timescales

Compound Inundation Impacts of Coastal Climate Change: Sea-Level Rise, Groundwater Rise, and Coastal Precipitation

A method for physically based model analysis of conjunctive use in response to potential climate changes

Contact Info

Product

Resources

About