Hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and parts of the Aucilla-Suwannee-Ochlockonee River basins in Georgia and adjacent parts of Florida and Alabama during drought conditions, July 2011

Gordon, Debbie W.; Peck, Michael F.; Painter, Jaime A.

doi:10.3133/sir20125179

Cited by 4 publications

(4 citation statements)

References 7 publications

(16 reference statements)

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“…Summer low flows frequently overlap with peak irrigation season, and often include the predictable drying of intermittent streams and below‐average flows in perennial streams during drier years (Rugel et al, 2012). Additionally, during recent periods of climatological, multi‐year drought, some historically perennial streams have ceased to flow (Golladay et al, 2003; Rugel et al, 2016), indicating that climate change and increased frequency and intensity of groundwater pumping in this region are pushing historically perennial streams towards increasing intermittency (Gordon et al, 2012; Rugel et al, 2012).…”

Section: Methodsmentioning

confidence: 99%

“…Additionally, climate change models predict a warmer climate, shifts in precipitation regimes, increased evapotranspiration rates and more frequent and intense droughts in this region (Ingram, 2013; IPCC, 2007). Thus, climate change coupled with water extraction for irrigated agriculture has the potential to exacerbate the frequency of intermittency of those streams most affected by groundwater pumping (Gordon et al, 2012). However, we do not know whether or how reductions in stream flows will alter the availability of food resources and resulting trophic dynamics for small‐bodied fishes.…”

Section: Introductionmentioning

confidence: 99%

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Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed

Fallon

Capps

Freeman

et al. 2021

Ecology of Freshwater Fish

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Stream intermittency is predicted to increase where water withdrawals and climate warming are increasing. In regions coupled with high fish diversity, understanding how intermittency influences fish trophic ecology is critical for informing ecosystem function. This study compared fish diets across seasons in perennial and intermittent streams to estimate the immediate and cumulative effects of stream drying on fish foraging patterns. We used gut content analysis to compare the diets of small-bodied, secondary consumer fishes, including two minnow and three darter species found in the lower Flint River Basin of southwestern Georgia, during both the summer (before stream dry-down) and fall (post flow resumption) seasons. Fish communities in perennial streams had greater diet richness compared to fishes in intermittent streams for both seasons. Darter diets were characterised by rheophilic aquatic insects in perennial streams and by benthic crustaceans (copepods, cladocerans and isopods) and predatory aquatic insects in intermittent streams. Minnow diets were typified by freshwater sponges, eggs and organic detritus in intermittent streams and by terrestrial insects and diatoms in perennial streams. Fishes in intermittent streams consumed significantly more benthic crustaceans in the fall (37% increase in proportional volume) compared to preflow cessation conditions in the summer, suggesting these organisms play an important, yet relatively unrecognised role in supporting fish communities in southeastern streams. Our findings enhance our understanding of how stream intermittency influences the trophic dynamics of secondary consumer fishes in an agricultural watershed increasingly affected by water scarcity.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed

Fallon

Capps

Freeman

et al. 2021

Ecology of Freshwater Fish

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show abstract

“…aquifer (November 2008, Gordon andPeck, 2010;May andJune 2010, Kinnaman andDixon, 2011;andJuly 2011, Gordon andothers, 2012) provided groundwater-level measurements for use in calibrating the groundwater-flow model for the three stress periods. Continuous groundwater-level recorders at 31 sites in Georgia provided monthly average water levels for calibration of the remaining stress periods.…”

Section: Extent and Discretizationmentioning

confidence: 99%

“…The development of potentiometric-surface maps for the Upper Floridan aquifer in the lower ACF River Basin for November 2008, and July 2011, and 174 monthly measurements, respectively. The spatial distribution of the simulated groundwater-level residuals for these three stress periods was similar in the residual intervals to those obtained for the mean residuals calculated fig.…”

Section: Model Fitmentioning

confidence: 99%

Groundwater-flow budget for the lower Apalachicola-Chattahoochee-Flint River Basin in southwestern Georgia and parts of Florida and Alabama, 2008–12

Jones¹,

Painter²,

LaFontaine³

et al. 2017

Scientific Investigations Report

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For more information on the USGS-the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment-visit https://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit https://store.usgs.gov.Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.Although this information product, for the most part, is in the public domain, it also may contain copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner.Suggested citation: Jones, L.E., Painter, Jaime, LaFontaine, Jacob, Sepulveda, Nicasio, and Sifuentes, D.F., 2017, Groundwater-flow budget for the lower Apalachicola-Chattahoochee-Flint River Basin in southwestern Georgia and parts of Florida and Alabama, 2008-12 By L. Elliott Jones, Jaime Painter, Jacob LaFontaine, Nicasio Sepulveda, and Dorothy F. Sifuentes AbstractAs part of the National Water Census program in the Apalachicola-Chattahoochee-Flint (ACF) River Basin, the U.S. Geological Survey evaluated the groundwater budget of the lower ACF, with particular emphasis on recharge, characterizing the spatial and temporal relation between surface water and groundwater, and groundwater pumping. To evaluate the hydrologic budget of the lower ACF River Basin, a groundwater-flow model, constructed using MODFLOW-2005, was developed for the Upper Floridan aquifer and overlying semiconfining unit for 2008-12. Model input included temporally and spatially variable specified recharge, estimated using a Precipitation-Runoff Modeling System (PRMS) model for the ACF River Basin, and pumping, partly estimated on the basis of measured agricultural pumping rates in Georgia. The model was calibrated to measured groundwater levels and base flows, which were estimated using hydrograph separation.The simulated groundwater-flow budget resulted in a small net cumulative loss of groundwater in storage during the study period. The model simulated a net loss in groundwater storage for all the subbasins as conditions became substantially drier from the beginning to the end of the study period. The model is limited by its conceptualization, the data used to represent and calibrate the model, and the mathematical representation of the system; therefore, any interpretations should be considered in light of these limitations. In spite of these limitations, the model provides insight regarding water availability in the lower ACF River Basin.

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Multi-reservoir system response to alternative stochastically simulated stationary hydrologic scenarios: An evaluation for the Apalachicola-Chattahoochee-Flint (ACF) Basin

Leitman,

Ahmadisharaf,

Brunner

2024

Journal of Hydrology: Regional Studies

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Hydrologic and water-quality conditions in the lower Apalachicola-Chattahoochee-Flint and parts of the Aucilla-Suwannee-Ochlockonee River basins in Georgia and adjacent parts of Florida and Alabama during drought conditions, July 2011

Abstract: Schematic cross sections showing the hydrologic connection between the Flint River, the overburden sediments of the upper semiconfining unit, and the Upper Floridan aquifer in Georgia during the wet season and the dry, summer growing season .

Cited by 4 publications

References 7 publications

Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed

Effects of stream intermittency on minnow (Leuciscidae) and darter (Percidae) trophic dynamics in an agricultural watershed

Groundwater-flow budget for the lower Apalachicola-Chattahoochee-Flint River Basin in southwestern Georgia and parts of Florida and Alabama, 2008–12

Multi-reservoir system response to alternative stochastically simulated stationary hydrologic scenarios: An evaluation for the Apalachicola-Chattahoochee-Flint (ACF) Basin

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