L. K. Read, D. N. Yates, J. M. McCreight, A. Rafieeinasab, K. Sampson, D. J. Gochis
The National Water Model (NWM) was deployed by the National Oceanic and Atmospheric Administration to simulate operational forecasts of hydrologic states across the continental United States. This paper describes the geospatial river network (“hydro-fabric”), physics, and parameters of the NWM, elucidating the challenges of extrapolating parameters a large scale with limited observations. A set of regression-based channel geometry parameters are evaluated for a subset of the 2.7 million NWM reaches, and the riverine compound channel scheme is described. Based on the results from regional streamflow experiments within the broader NWM context, the compound channel reduced the root mean squared error by 2% and improved median Nash–Sutcliffe efficiency by 16% compared with a non-compound formulation. Peak event analysis from 910 peak flow events across 26 basins matched from the US Flash Flood Observation Database revealed that the mean timing error is 3 h lagged behind the observations. The routing time step was also tested, for 5-min (default, operational setting) and 1-h increments. The model was computationally stable and able to convey the flood peaks, although the hydrograph shape and peak timing were altered.
{"title":"Development and evaluation of the channel routing model and parameters within the National Water Model","authors":"L. K. Read, D. N. Yates, J. M. McCreight, A. Rafieeinasab, K. Sampson, D. J. Gochis","doi":"10.1111/1752-1688.13134","DOIUrl":"https://doi.org/10.1111/1752-1688.13134","url":null,"abstract":"<p>The National Water Model (NWM) was deployed by the National Oceanic and Atmospheric Administration to simulate operational forecasts of hydrologic states across the continental United States. This paper describes the geospatial river network (“hydro-fabric”), physics, and parameters of the NWM, elucidating the challenges of extrapolating parameters a large scale with limited observations. A set of regression-based channel geometry parameters are evaluated for a subset of the 2.7 million NWM reaches, and the riverine compound channel scheme is described. Based on the results from regional streamflow experiments within the broader NWM context, the compound channel reduced the root mean squared error by 2% and improved median Nash–Sutcliffe efficiency by 16% compared with a non-compound formulation. Peak event analysis from 910 peak flow events across 26 basins matched from the US Flash Flood Observation Database revealed that the mean timing error is 3 h lagged behind the observations. The routing time step was also tested, for 5-min (default, operational setting) and 1-h increments. The model was computationally stable and able to convey the flood peaks, although the hydrograph shape and peak timing were altered.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 5","pages":"1051-1066"},"PeriodicalIF":2.4,"publicationDate":"2023-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50140196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
<p>The ISWS, along with the Illinois Natural History Survey (est. 1861) and Illinois State Geological Survey (est. 1905), were transferred out of the University of Illinois in 1917 to be administered by the Illinois Department of Registration and Education, eventually being transferred to the Illinois Department of Energy and Natural Resources and then to a new Illinois Department of Natural Resources. In 2008, the Scientific Surveys came home to where it all started, the University of Illinois, under the umbrella of the Prairie Research Institute with the addition of the Illinois Sustainability and Technology Center and Illinois State Archeological Survey. Together, the Prairie Research Institute has over 800 scientists, technicians, post-docs, research affiliates, visiting scholars, students, and administrative support staff, conducting transformative science that benefits the people, economy, and environment of Illinois, the nation, and the world. From their inception, the Scientific Surveys have always been located on the University of Illinois campus and continues to capitalize on the mutual benefits of collaboration with faculty and staff.</p><p>The papers presented in this special issue marking the 125th anniversary founding of the ISWS are but a representation of the current contributions and research being conducted by ISWS scientists and colleagues, aiming to demonstrate what Illinois experiences in water resources planning and management under changing conditions, especially changing climate. They build on water supply planning legacy by incorporating future demands and climate uncertainties in Illinois, including the major updating of Illinois precipitation frequency standards. The theme of understanding uncertainties and bias continues in evaluating groundwater static head measurements to understand water-level variability. Of course, projecting climate change impacts is paramount to many water resource issues and authors discuss which climate ensemble approaches produce less uncertain climate model outputs. Nutrient losses in US agricultural lands are an issue not only for loss of crop production but downstream impacts. Winter cover crops have much promise for reducing nitrate, phosphorus, and sediment loads. Authors present possible detrimental impacts on storage volumes for downstream reservoirs in drought years. An Illinois River watershed analysis presents evidence that spatial and temporal shift in phosphorus loading affects recent increases in phosphorus despite point and nonpoint source efforts. The ISWS has long-term datasets which contributed to improved model calibration to capture chloride accumulation in shallow aquifers. Reservoirs serve populations and industry so understanding outflows from them is important for water resource planning and management. Comparing performance of three machine learning models shows promise for simulating reservoir outflow. Finally, colleagues in Illinois and China test a theoretical frame
{"title":"Featured collection introduction: Water resources planning and management under changing conditions—Experience of Illinois","authors":"Laura L. Keefer","doi":"10.1111/1752-1688.13139","DOIUrl":"https://doi.org/10.1111/1752-1688.13139","url":null,"abstract":"<p>The ISWS, along with the Illinois Natural History Survey (est. 1861) and Illinois State Geological Survey (est. 1905), were transferred out of the University of Illinois in 1917 to be administered by the Illinois Department of Registration and Education, eventually being transferred to the Illinois Department of Energy and Natural Resources and then to a new Illinois Department of Natural Resources. In 2008, the Scientific Surveys came home to where it all started, the University of Illinois, under the umbrella of the Prairie Research Institute with the addition of the Illinois Sustainability and Technology Center and Illinois State Archeological Survey. Together, the Prairie Research Institute has over 800 scientists, technicians, post-docs, research affiliates, visiting scholars, students, and administrative support staff, conducting transformative science that benefits the people, economy, and environment of Illinois, the nation, and the world. From their inception, the Scientific Surveys have always been located on the University of Illinois campus and continues to capitalize on the mutual benefits of collaboration with faculty and staff.</p><p>The papers presented in this special issue marking the 125th anniversary founding of the ISWS are but a representation of the current contributions and research being conducted by ISWS scientists and colleagues, aiming to demonstrate what Illinois experiences in water resources planning and management under changing conditions, especially changing climate. They build on water supply planning legacy by incorporating future demands and climate uncertainties in Illinois, including the major updating of Illinois precipitation frequency standards. The theme of understanding uncertainties and bias continues in evaluating groundwater static head measurements to understand water-level variability. Of course, projecting climate change impacts is paramount to many water resource issues and authors discuss which climate ensemble approaches produce less uncertain climate model outputs. Nutrient losses in US agricultural lands are an issue not only for loss of crop production but downstream impacts. Winter cover crops have much promise for reducing nitrate, phosphorus, and sediment loads. Authors present possible detrimental impacts on storage volumes for downstream reservoirs in drought years. An Illinois River watershed analysis presents evidence that spatial and temporal shift in phosphorus loading affects recent increases in phosphorus despite point and nonpoint source efforts. The ISWS has long-term datasets which contributed to improved model calibration to capture chloride accumulation in shallow aquifers. Reservoirs serve populations and industry so understanding outflows from them is important for water resource planning and management. Comparing performance of three machine learning models shows promise for simulating reservoir outflow. Finally, colleagues in Illinois and China test a theoretical frame","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 3","pages":"447-448"},"PeriodicalIF":2.4,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1752-1688.13139","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50121400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sarah M. Stackpoole, Gretchen P. Oelsner, Edward G. Stets, Jory S. Hecht, Zachary C. Johnson, Anthony J. Tesoriero, Michelle A. Walvoord, Jeff G. Chanat, Krista A. Dunne, Phillip J. Goodling, Bruce D. Lindsey, Mike R. Meador, Sarah A. Spaulding
Water is vital to human life and healthy ecosystems. Here we outline the current state of national-scale water resources trend assessments, identify key gaps, and suggest advancements to better address critical issues related to changes in water resources that may threaten human development or the environment. Questions like, “Do we have less suitable drinking water now than we had 20 years ago?” or “Are flood events more common now than they were in the past?” prompted improvements in data, trend estimation methods, and modeling frameworks to track changes in, and better understand how land use and climate influence four water resources domains: surface and groundwater quantity and quality. However, continued advancement in trend assessments to better address issues related to changes in water availability is needed. Areas of need include more timely and efficient delivery of water resources trend results and improved capacity to estimate trends at unmonitored locations. Additional integration pieces include increased understanding of groundwater–surface water interactions, incorporation of both quantity and quality trends into water availability estimates, and the refinement of trend metrics to account for the competing needs of society and ecological integrity. Coupled with improved driver attribution studies, these components will better inform current and future water resources management.
{"title":"Integrated water resources trend assessments: State of the science, challenges, and opportunities for advancement","authors":"Sarah M. Stackpoole, Gretchen P. Oelsner, Edward G. Stets, Jory S. Hecht, Zachary C. Johnson, Anthony J. Tesoriero, Michelle A. Walvoord, Jeff G. Chanat, Krista A. Dunne, Phillip J. Goodling, Bruce D. Lindsey, Mike R. Meador, Sarah A. Spaulding","doi":"10.1111/1752-1688.13137","DOIUrl":"10.1111/1752-1688.13137","url":null,"abstract":"<p>Water is vital to human life and healthy ecosystems. Here we outline the current state of national-scale water resources trend assessments, identify key gaps, and suggest advancements to better address critical issues related to changes in water resources that may threaten human development or the environment. Questions like, “Do we have less suitable drinking water now than we had 20 years ago?” or “Are flood events more common now than they were in the past?” prompted improvements in data, trend estimation methods, and modeling frameworks to track changes in, and better understand how land use and climate influence four water resources domains: surface and groundwater quantity and quality. However, continued advancement in trend assessments to better address issues related to changes in water availability is needed. Areas of need include more timely and efficient delivery of water resources trend results and improved capacity to estimate trends at unmonitored locations. Additional integration pieces include increased understanding of groundwater–surface water interactions, incorporation of both quantity and quality trends into water availability estimates, and the refinement of trend metrics to account for the competing needs of society and ecological integrity. Coupled with improved driver attribution studies, these components will better inform current and future water resources management.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 6","pages":"1181-1197"},"PeriodicalIF":2.4,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1752-1688.13137","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135832839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Recession analysis can be used for qualitative comparisons between basins and for quantitative analysis involving the slope and the shape of the recession curve. The groundwater-level recession hydrograph can be used to derive an estimate of the hydraulic diffusivity of a surficial aquifer. The recession index can be obtained from streamflow data and from a formulation that includes aquifer properties. The analysis of the method reveals nonlinear recession which can result from the down-valley flow component, a dual-aquifer effect, and leakage to or from the aquifer. Important concepts include the dominant recession index and secondary recession characteristics which can affect low flow. Under conditions of down-valley flow, the cross-valley flow component tends to be important for determining recession characteristics, including hydraulic diffusivity and the recession index. These findings are relevant to another recession parameter a which is the distance from the stream to the hydrologic divide and results are supported by test simulations of a technique for estimating recharge.
衰退分析可用于流域之间的定性比较,也可用于涉及衰退曲线斜率和形状的定量分析。地下水位衰退水文图可用来估算表层含水层的水力扩散率。衰退指数可从溪流数据和包含含水层特性的公式中获得。对该方法的分析表明,非线性衰退可能是由下溪流成分、双重含水层效应以及含水层的渗漏造成的。重要的概念包括主导衰退指数和可能影响低流量的次级衰退特征。在顺水流条件下,跨水流成分往往对确定退水特征(包括水力扩散率和退水指数)很重要。这些发现与另一个衰退参数 a 有关,即从溪流到水文分界线的距离。
{"title":"Comments about selected recession parameters","authors":"Albert T. Rutledge","doi":"10.1111/1752-1688.13136","DOIUrl":"10.1111/1752-1688.13136","url":null,"abstract":"<p>Recession analysis can be used for qualitative comparisons between basins and for quantitative analysis involving the slope and the shape of the recession curve. The groundwater-level recession hydrograph can be used to derive an estimate of the hydraulic diffusivity of a surficial aquifer. The recession index can be obtained from streamflow data and from a formulation that includes aquifer properties. The analysis of the method reveals nonlinear recession which can result from the down-valley flow component, a dual-aquifer effect, and leakage to or from the aquifer. Important concepts include the dominant recession index and secondary recession characteristics which can affect low flow. Under conditions of down-valley flow, the cross-valley flow component tends to be important for determining recession characteristics, including hydraulic diffusivity and the recession index. These findings are relevant to another recession parameter <i>a</i> which is the distance from the stream to the hydrologic divide and results are supported by test simulations of a technique for estimating recharge.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 6","pages":"1198-1210"},"PeriodicalIF":2.4,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122992986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Households reliant on unregulated, non-grid water and sanitation infrastructure, like private wells and septic systems, face water quality and reliability deficiencies and associated negative impacts on human health at greater proportions than households reliant on publicly-regulated, water and sewage systems. This study uses the 2019 American Housing Survey to produce the first joint, nationally-representative analysis of household reliance on wells and septics in decades. We find that there are lower proportions of U.S. households off the regulated water grid than other contemporary estimates. We also find that while 9.1% of U.S. households rely on both private well and septics simultaneously, a slightly higher proportion of households rely on only one of these systems, with the companion infrastructure being publicly regulated. Our results show that both private well and septic reliant households are much more likely to be non-Hispanic White, live in a single family home (a detached or attached one-family dwelling) or mobile home (a portable habitable structure that was originally fitted with wheels to facilitate movement), and to live outside a metropolitan area than those reliant on publicly regulated service. Yet, surprisingly both private well and septic reliant households do not have lower average incomes than households reliant on regulated systems. These results suggest that federal, state and local financial assistance, technical assistance and educational programs can be better targeted to ensure that in-need private well and septic reliant households can operate and maintain their essential water and sanitation infrastructure.
{"title":"The geography and socioeconomic characteristics of U.S. households reliant on private wells and septic systems","authors":"Ariana Hernandez, Gregory Pierce","doi":"10.1111/1752-1688.13135","DOIUrl":"10.1111/1752-1688.13135","url":null,"abstract":"<p>Households reliant on unregulated, non-grid water and sanitation infrastructure, like private wells and septic systems, face water quality and reliability deficiencies and associated negative impacts on human health at greater proportions than households reliant on publicly-regulated, water and sewage systems. This study uses the 2019 American Housing Survey to produce the first joint, nationally-representative analysis of household reliance on wells and septics in decades. We find that there are lower proportions of U.S. households off the regulated water grid than other contemporary estimates. We also find that while 9.1% of U.S. households rely on both private well and septics simultaneously, a slightly higher proportion of households rely on only one of these systems, with the companion infrastructure being publicly regulated. Our results show that both private well and septic reliant households are much more likely to be non-Hispanic White, live in a single family home (a detached or attached one-family dwelling) or mobile home (a portable habitable structure that was originally fitted with wheels to facilitate movement), and to live outside a metropolitan area than those reliant on publicly regulated service. Yet, surprisingly both private well and septic reliant households do not have lower average incomes than households reliant on regulated systems. These results suggest that federal, state and local financial assistance, technical assistance and educational programs can be better targeted to ensure that in-need private well and septic reliant households can operate and maintain their essential water and sanitation infrastructure.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 6","pages":"1397-1412"},"PeriodicalIF":2.4,"publicationDate":"2023-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113970133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Anyizi Bertha Nkemnyi, Lucy Mange Ndip, Benedicta Oshuware Oben, Oben Pius Mbu, Tambekong Talkspeak Arrey, Mbeng Ashu Arrey
{"title":"Disease Burden on a Riverine Population Dependent on a Peri-urban River: Insights from Hospitalization Data in Akonolinga, Cameroon","authors":"Anyizi Bertha Nkemnyi, Lucy Mange Ndip, Benedicta Oshuware Oben, Oben Pius Mbu, Tambekong Talkspeak Arrey, Mbeng Ashu Arrey","doi":"10.12691/ajwr-11-2-1","DOIUrl":"https://doi.org/10.12691/ajwr-11-2-1","url":null,"abstract":"","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"6 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80864949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. Rhett Jackson, Seth J. Wenger, Brian P. Bledsoe, J. Marshall Shepherd, Krista A. Capps, Amy D. Rosemond, Michael J. Paul, Meredith Welch-Devine, Ke Li, Timothy Stephens, Todd C. Rasmussen
Rapidly growing cities along the Interstate-85 corridor from Atlanta, GA, to Raleigh, NC, rely on small rivers for water supply and waste assimilation. These rivers share commonalities including water supply stress during droughts, seasonally low flows for wastewater dilution, increasing drought and precipitation extremes, downstream eutrophication issues, and high regional aquatic diversity. Further challenges include rapid growth; sprawl that exacerbates water quality and infrastructure issues; water infrastructure that spans numerous counties and municipalities; and large numbers of septic systems. Holistic multi-jurisdiction cooperative water resource planning along with policy and infrastructure modifications is necessary to adapt to population growth and climate. We propose six actions to improve water infrastructure resilience: increase water-use efficiency by municipal, industrial, agricultural, and thermoelectric power sectors; adopt indirect potable reuse or closed loop systems; allow for water sharing during droughts but regulate inter-basin transfers to protect aquatic ecosystems; increase nutrient recovery and reduce discharges of carbon and nutrients in effluents; employ green infrastructure and better stormwater management to reduce nonpoint pollutant loadings and mitigate urban heat island effects; and apply the CRIDA framework to incorporate climate and hydrologic uncertainty into water planning.
{"title":"Water supply, waste assimilation, and low-flow issues facing the Southeast Piedmont Interstate-85 urban archipelago","authors":"C. Rhett Jackson, Seth J. Wenger, Brian P. Bledsoe, J. Marshall Shepherd, Krista A. Capps, Amy D. Rosemond, Michael J. Paul, Meredith Welch-Devine, Ke Li, Timothy Stephens, Todd C. Rasmussen","doi":"10.1111/1752-1688.13130","DOIUrl":"https://doi.org/10.1111/1752-1688.13130","url":null,"abstract":"<p>Rapidly growing cities along the Interstate-85 corridor from Atlanta, GA, to Raleigh, NC, rely on small rivers for water supply and waste assimilation. These rivers share commonalities including water supply stress during droughts, seasonally low flows for wastewater dilution, increasing drought and precipitation extremes, downstream eutrophication issues, and high regional aquatic diversity. Further challenges include rapid growth; sprawl that exacerbates water quality and infrastructure issues; water infrastructure that spans numerous counties and municipalities; and large numbers of septic systems. Holistic multi-jurisdiction cooperative water resource planning along with policy and infrastructure modifications is necessary to adapt to population growth and climate. We propose six actions to improve water infrastructure resilience: increase water-use efficiency by municipal, industrial, agricultural, and thermoelectric power sectors; adopt indirect potable reuse or closed loop systems; allow for water sharing during droughts but regulate inter-basin transfers to protect aquatic ecosystems; increase nutrient recovery and reduce discharges of carbon and nutrients in effluents; employ green infrastructure and better stormwater management to reduce nonpoint pollutant loadings and mitigate urban heat island effects; and apply the CRIDA framework to incorporate climate and hydrologic uncertainty into water planning.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 5","pages":"1146-1161"},"PeriodicalIF":2.4,"publicationDate":"2023-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1752-1688.13130","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50152427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Groundwater Level Depletion Assessment of Dhaka City Using MODFLOW","authors":"Anika Mahzabin, Md. Jakir Hossain, Siam Alam, Shams E Shifat, Anika Yunus","doi":"10.12691/ajwr-11-1-4","DOIUrl":"https://doi.org/10.12691/ajwr-11-1-4","url":null,"abstract":"","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"329 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80460636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The High Plains aquifer (HPA) is the primary water source for agricultural irrigation in the US Great Plains. The water levels in many locations of the aquifer have declined steadily over the past several decades because the rate of water withdrawals exceeds recharge, which has been a serious concern to the water resources management in the region. We evaluated temporal trends and variations in agricultural water use and hydroclimatic variables including precipitation, air temperature, reference evapotranspiration, runoff, groundwater level, and terrestrial water storage across the HPA region for different periods from 1985 to 2020 at the grid, county, or region scale. The results showed that water withdrawals decreased from 21.3 km3/year in 1985 to 18.2 km3/year in 2015, while irrigated croplands increased from 71,928 km2 in 1985 to 78,464 km2 in 2015 in the entire HPA. The hydroclimatic time-series showed wetting trends in most of the northern HPA, but drying and warming trends in the southern region from 1985 to 2020. The groundwater level time-series indicated flat trends in the north, but significant declining in the central and southern HPA. Trends in irrigation water withdrawals and irrigation area across the HPA were controlled by the advancement of irrigation systems and technologies and the management of sustainable water use, but also were affected by dynamical changes in the hydroclimatic conditions.
{"title":"Temporal trends in agricultural water use and the relationships to hydroclimatic factors in the High Plains aquifer region","authors":"Lei Ji, Gabriel B. Senay","doi":"10.1111/1752-1688.13133","DOIUrl":"https://doi.org/10.1111/1752-1688.13133","url":null,"abstract":"<p>The High Plains aquifer (HPA) is the primary water source for agricultural irrigation in the US Great Plains. The water levels in many locations of the aquifer have declined steadily over the past several decades because the rate of water withdrawals exceeds recharge, which has been a serious concern to the water resources management in the region. We evaluated temporal trends and variations in agricultural water use and hydroclimatic variables including precipitation, air temperature, reference evapotranspiration, runoff, groundwater level, and terrestrial water storage across the HPA region for different periods from 1985 to 2020 at the grid, county, or region scale. The results showed that water withdrawals decreased from 21.3 km<sup>3</sup>/year in 1985 to 18.2 km<sup>3</sup>/year in 2015, while irrigated croplands increased from 71,928 km<sup>2</sup> in 1985 to 78,464 km<sup>2</sup> in 2015 in the entire HPA. The hydroclimatic time-series showed wetting trends in most of the northern HPA, but drying and warming trends in the southern region from 1985 to 2020. The groundwater level time-series indicated flat trends in the north, but significant declining in the central and southern HPA. Trends in irrigation water withdrawals and irrigation area across the HPA were controlled by the advancement of irrigation systems and technologies and the management of sustainable water use, but also were affected by dynamical changes in the hydroclimatic conditions.</p>","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"59 5","pages":"950-969"},"PeriodicalIF":2.4,"publicationDate":"2023-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50150840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Proposal for a Rainwater Drainage Method for the Village of Taïba Niassene","authors":"Ndiouga Camara, Mouhamadou Moustapha Mbacké Ndour, Ndèye Khady Tounkara, S. Tamba","doi":"10.12691/ajwr-11-1-3","DOIUrl":"https://doi.org/10.12691/ajwr-11-1-3","url":null,"abstract":"","PeriodicalId":17234,"journal":{"name":"Journal of The American Water Resources Association","volume":"23 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2023-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76537403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}