Simulation of Hydrologic-System Responses to Ground-Water Withdrawals in the Hunt-Annaquatucket-Pettaquamscutt Stream-Aquifer System, Rhode Island

Barlow, Paul M.; Ostiguy, Lance J.

doi:10.3133/ofr20061226

Cited by 7 publications

(19 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Approximating an unconfined aquifer as having constant saturated thickness is a well-known modeling technique (Neuman, 1974;Bear, 1979;Marsily, 1986;Hill, 1998;Hill et al, 2000;Reilly, 2001;Rushton, 2003;Reilly and Harbaugh, 2004) that does not, in itself, constitute a conceptual error. The approximation is useful for linearizing the groundwater flow equations to enable superposition of solutions (Reilly et al, 1987;Reilly and Harbaugh, 2004) and has been used in aquifer-test analysis (Masterson and Barlow, 1996) and numerical groundwater models (Souza and Voss, 1987;Danskin, 1998;Hanson et al, 2003Hanson et al, , 2004Wylie, 2004;Franssen and Stauffer, 2005;Gingerich and Voss, 2005;Oki, 2005;Barlow and Ostiguy, 2007).…”

Section: Constant-saturated-thickness Approximation Of the Unconfinedmentioning

confidence: 99%

Comment on “An unconfined groundwater model of the Death Valley Regional Flow System and a comparison to its confined predecessor” by R.W.H. Carroll, G.M. Pohll and R.L. Hershey [Journal of Hydrology 373/3–4, pp. 316–328]

Faunt

Provost

Hill

et al. 2011

Journal of Hydrology

View full text Add to dashboard Cite

Carroll et al. (2009) state that the United States Geological Survey (USGS) Death Valley Regional Flow System (DVRFS) model, which is based on MODFLOW, is ''conceptually inaccurate in that it models an unconfined aquifer as a confined system and does not simulate unconfined drawdown in transient pumping simulations.'' Carroll et al. (2009) claim that ''more realistic estimates of water availability'' can be produced by a SURFACT-based model of the DVRFS that simulates unconfined groundwater flow and limits withdrawals from wells to avoid excessive drawdown. Differences in results from the original MOD-FLOW-based model and the SURFACT-based model stem primarily from application by Carroll et al. (2009) of head limits that can also be applied using the existing MODLOW model and not from any substantial difference in the accuracy with which the unconfined aquifer is represented in the two models. In a hypothetical 50-year predictive simulation presented by Carroll et al. (2009), large differences between the models are shown when simulating pumping from the lower clastic confining unit, where the transmissivity is nearly two orders of magnitude less than in an alluvial aquifer. Yet even for this extreme example, drawdowns and pumping rates from the MODFLOW and SURFACT models are similar when the head-limit capabilities of the MODFLOW MNW Package are applied. These similarities persist despite possible discrepancies between assigned hydraulic properties. The resulting comparison between the MODFLOW and SURFACT models of the DVRFS suggests that approximating the unconfined system in the DVRFS as a constant-saturated-thickness system (called a ''confined system'' by Carroll et al., 2009) performs very well.

show abstract

Section: Constant-saturated-thickness Approximation Of the Unconfinedmentioning

confidence: 99%

Comment on “An unconfined groundwater model of the Death Valley Regional Flow System and a comparison to its confined predecessor” by R.W.H. Carroll, G.M. Pohll and R.L. Hershey [Journal of Hydrology 373/3–4, pp. 316–328]

Faunt

Provost

Hill

et al. 2011

Journal of Hydrology

View full text Add to dashboard Cite

show abstract

“…A U.S. Geological Survey (USGS) study in the HAP by Barlow and Dickerman (2001) designed a numerical model to simulate groundwater flow in the glacial valley-fill deposits; this model was updated by Barlow and Ostiguy (2007). One of the purposes of these studies was to determine areas contributing recharge to the production wells.…”

Section: Introductionmentioning

confidence: 99%

Evaluating prediction uncertainty of areas contributing recharge to well fields of multiple water suppliers in the Hunt-Annaquatucket-Pettaquamscutt River Basins, Rhode Island

Friesz¹

2012

Scientific Investigations Report

View full text Add to dashboard Cite

Three river basins in central Rhode Island-the Hunt River, the Annaquatucket River, and the Pettaquamscutt River-contain 15 production wells clustered in 4 pumping centers from which drinking water is withdrawn. These highcapacity production wells, operated by three water suppliers, are screened in coarse-grained deposits of glacial origin. The risk of contaminating water withdrawn by these well centers lower probabilities. The deterministic contributing areas generally corresponded to areas associated with high probabilities (greater than 50 percent). Areas associated with low probabilities extended long distances along groundwater divides in the uplands remote from the well centers. water to these 15 large-capacity production wells. The new study modified the original HAP models to incorporate the surrounding uplands directly into the model and calibrated the model to hydrologic data by inverse modeling using nonlinear regression. Nonlinear regression estimates the optimal set of model-parameter values. In contrast to parameter values that 0 1 2 MILES Geology Figure 2. Production wells, model extents, surficial geology, and selected drainage boundaries, Hunt-Annaquatucket-Pettaquamscutt River Basins, Rhode Island.

show abstract

“…35) were used as the case study for developing the HyDroDSS because of long-standing concerns about the sustainability of historical withdrawal rates for water supply in this basin. The example provided in the HyDroDSS is based on the long-term streamflow, water-withdrawal, and hydrogeologic data for this study area and the well-vetted groundwater model derived from the data (Barlow, 1997;Dickerman and Barlow, 1997;Barlow and Dickerman, 2001;Barlow and others 2003;Barlow and Ostiguy, 2007). Concerns about the long-term sustainability of water supplies in relation to ecological protection goals for the Hunt River Basin and the adjoining Annaquatucket and Pettaquamscutt stream-aquifer systems (collectively known as the HAP stream-aquifer system) prompted the studies to develop groundwater and conjunctive-management models to provide a way for local water managers to balance watersupply needs with ecological protection goals in the basin.…”

Section: Case Study-streamgage 01117000 Hunt River Near East Greenwicmentioning

confidence: 99%

Hydrologic Drought Decision Support System (HyDroDSS)

Granato¹

2014

Open-File Report

View full text Add to dashboard Cite

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 http://www.usgs.gov or call 1-888-ASK-USGS.For an overview of USGS information products, including maps, imagery, and publications, visit http://www.usgs.gov/pubprodTo order this and other USGS information products, visit http://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: Granato, G.E., 2014, Hydrologic Drought Decision Support System (HyDroDSS): U.S. Geological Survey Open-File Report 2014-1003. ISSN 2331ISSN -1258 iii AcknowledgmentsThe author thanks Carl Carlson, David Bjerklie, Mary Ashman, and Kevin Breen of the U.S. Geological Survey (USGS) and Kathleen Crawley of the Rhode Island Water Resources Board for providing thoughtful and thorough technical and editorial reviews of this report, the HyDroDSS program, and accompanying digital media. Richard Vogel of Tufts University identified the position analysis approaches developed by Hirsch (1981b) as a potential method for drought-projection analyses and provided information on use of the probability-plot correlation coefficient method for evaluating the distribution of the random numbers generated by the HyDroDSS. Robert Hirsch of the USGS provided information on the application of position analysis, and Gary Tasker of the USGS provided background information on the use of bootstrap methods in the application of position analysis (Tasker and Dunne, 1997). Altitude, as used in this report, refers to distance above the vertical datum.Withdrawal rates from some production wells are reported in million gallons per month (Mgal/mo) and in million gallons per year (Mgal/yr). Hydrologic Drought Decision Support System (HyDroDSS)By Gregory E. Granato AbstractThe hydrologic drought decision support system (HyDroDSS) was developed by the U.S. Geological Survey (USGS) in cooperation with the Rhode Island Water Resources Board (RIWRB) for use in the analysis of hydrologic variables that may indicate the risk for streamflows to be below userdefined flow targets at a designated site of interest, which is defined herein as data-collection site on a stream that may be adversely affected by pumping. Hydrologic drought is defined for this study as a period of lower than normal streamflows caused by precipitation deficits and (or) water withdrawals. The HyDroDSS is designed to provide water managers with risk-based information for balancing water-supply needs and aquatic-habitat protection goals to mitigate potential effects of hydrologic drought.This report describes the theory and methods for retrospective streamflow-depletion analysis, rank correlation analysis, and drough...

show abstract

Simulation of Hydrologic-System Responses to Ground-Water Withdrawals in the Hunt-Annaquatucket-Pettaquamscutt Stream-Aquifer System, Rhode Island

Cited by 7 publications

References 5 publications

Comment on “An unconfined groundwater model of the Death Valley Regional Flow System and a comparison to its confined predecessor” by R.W.H. Carroll, G.M. Pohll and R.L. Hershey [Journal of Hydrology 373/3–4, pp. 316–328]

Comment on “An unconfined groundwater model of the Death Valley Regional Flow System and a comparison to its confined predecessor” by R.W.H. Carroll, G.M. Pohll and R.L. Hershey [Journal of Hydrology 373/3–4, pp. 316–328]

Evaluating prediction uncertainty of areas contributing recharge to well fields of multiple water suppliers in the Hunt-Annaquatucket-Pettaquamscutt River Basins, Rhode Island

Hydrologic Drought Decision Support System (HyDroDSS)

Contact Info

Product

Resources

About