Journal of Contemporary Water Research & Education最新文献

{"title":"Effects of Rock Covering on Underlying Engineered Media in Bioretention Practices in Middle Tennessee, USA","authors":"Blue Curry,&nbsp;Andrea Ludwig,&nbsp;Michael Essington","doi":"10.1111/j.1936-704X.2024.3398.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2024.3398.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Bioretention practices have become a common way to protect natural waterways in urban and suburban landscapes across the United States. However, optimal design, implementation, operation, and maintenance are still in need of study. A field survey of 52 bioretention practices was conducted in Davidson County, Tennessee, to address research questions related to operation and maintenance. A suite of site conditions were documented, such as size, signs of erosion, and dominant surface cover. Samples were collected from the surface of the engineered media layer and analyzed for organic matter content and bulk density. Vegetation was described in terms of dominant species and canopy cover. On average, the organic matter content of media under plant-based mulch cover was significantly greater than that under rock cover (<i>p</i> = 0.002). Bulk density of the surface media is strongly and inversely correlated to organic matter content; bulk density did not generally vary with bioretention area age and was highly variable within treatments. On average, the bulk density of the media under the plant-based mulch cover was significantly less than that under the rock cover. Media under the composite treatments had similar bulk density to both the plant-based mulch (<i>p</i> = 0.233) and the rock covers (<i>p</i> = 0.132). Plant canopy did not surpass 70% in practices with bulk density values above 1.55 g/cm³. These results suggest that consideration should be made regarding the tradeoffs between utilizing rock coverings and potential for plant establishment impacts.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2024.3398.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139704882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single and Multispecies Cover Crop Effects on Corn Production and Economic Returns","authors":"Bhupinder Singh,&nbsp;Gurpreet Kaur,&nbsp;Gurbir Singh,&nbsp;Jagmandeep S. Dhillon,&nbsp;Nicolas Quintana Ashwell","doi":"10.1111/j.1936-704X.2023.3394.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3394.x","url":null,"abstract":"<div>\u0000 \u0000 <p>The adoption of cover crops (CCs) has gained popularity in the continuous corn (<i>Zea mays</i> L.) production system due to their multiple benefits including scavenging or fixing nitrogen (N) in the soil. However, a CC's ability to develop early cover, scavenge N, and provide N to the following cash crop is species-dependent and affected by environment. A field study was conducted in three diverse environments to determine growth characteristics of nine CC treatments (i.e., monocultures or mixes of grasses, legumes, and brassica), and their effect on the following corn crop was compared to no cover crop treatment (noCC). Cover crops significantly differed for above-ground biomass, plant tissue carbon (C) and N concentrations, carbon to nitrogen ratio (C/N), and total N uptake (TNU). Among monocultures, grasses had the highest biomass and C/N ratio, and legumes had the highest N concentrations and TNU. Corn grain yield was highest following radish, whereas lowest corn yield was found following cereal rye + crimson clover mix in environment 1. Cover crops varied for C/N ratios in all three environments, but only affected corn plant height (PH) and grain yield in one environment. Cover crops belonging to the same species also exhibit different responses for characteristics measured, depending upon the environment. The expected returns were also variable, especially in CC mixes. The study provides valuable information on the species-specific functionality of CCs in continuous corn under variable environmental conditions. The information will benefit future studies to explore a high diversity mixture of CCs that may outperform across all three environments.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3394.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154395","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a Simple Strategy for Roadside Spring Water Disinfection in Central Appalachia","authors":"Hannah Patton,&nbsp;Leigh-Anne Krometis,&nbsp;Ben B. Faulkner,&nbsp;Alasdair Cohen,&nbsp;Erin Ling,&nbsp;Emily Sarver","doi":"10.1111/j.1936-704X.2023.3388.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3388.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Several studies have highlighted issues of unreliable access to safe drinking water in the Appalachian region. In some cases, residents turn to roadside springs as a practical, and culturally valuable, drinking water source. However, public reliance on roadside springs for potable use can present concerns, as bacterial contamination of spring water has been documented throughout Appalachia. This study aimed to 1) develop a simple, low-cost protocol using household bleach to inactivate total coliform and <i>E. coli</i> in untreated roadside spring water; 2) provide educational materials at local roadside springs to inform users of this simple treatment strategy; and 3) assess spring user perceptions of the educational materials via a short survey. Laboratory scale trials emulating typical spring water collection and storage conditions investigated the use of household bleach (7.4-7.5% sodium hypochlorite) for total coliform and <i>E. coli</i> bacteria inactivation and free chlorine residual maintenance in spring water over time. Results showed that 2 drops (approximately 0.10 mL) of household bleach from an eyedropper per 1 gallon of spring water provided adequate total coliform and <i>E. coli</i> disinfection, while maintaining free chlorine levels below typical taste thresholds and providing sufficient residual over a 1-month trial period. An infographic communicating the disinfection protocol and a corresponding survey were created and distributed at roadside springs in rural regions of southwestern Virginia and southern West Virginia. The majority of spring user survey respondents (80%) reported that the infographic was generally helpful, and over half of respondents stated that they would use the bleach protocol.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3388.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“So That We Can Save the Earth from Dying”: Highlights from a Middle School Environmental Field Day","authors":"Kenton Sena,&nbsp;Jill Abney,&nbsp;Hannah Ruehl,&nbsp;Chris Barton","doi":"10.1111/j.1936-704X.2023.3389.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3389.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Continued urbanization is likely to reduce human-nature experience, transforming human-dwelt spaces into increasingly artificial environments and removing humans from interaction with non-human living things and their ecosystems. In urban spaces, outdoor experiential educational activities can help students increase their familiarity with the outdoors and get their hands dirty. This case study reports on an environmental field day for middle school students from an urban Kentucky middle school. Students rotated through three activities (picking insects out of leaf packs, testing water quality, and planting trees), then completed a brief survey designed and administered by their faculty. Students rated the tree planting activity more highly than the other two activities (p &lt; 0.0001), suggesting that this activity was more accessible, interesting, and engaging to a broader range of students. However, student qualitative responses to the water quality and leaf pack activities demonstrated an ability to make connections between those activities and the broader world, such as the importance of their stream-water quality for the Gulf of Mexico, or the implications of finding pollution-tolerant insects for understanding stream health. Overall, we recommend planning field days with multiple activities that offer various entry points for students with a range of prior experience of nature. We also emphasize the potential for these sorts of activities to help students develop a sense of awe or wonder in nature—seeing and handling things they never considered before but now experience as profound and interesting. These observations are consistent with the literature demonstrating the need for human-nature experience (especially in urban areas) to support developing a sense of affectivity for the environment and interest in taking environmentally beneficial actions, as well as the role of place-based experiential education in helping students bridge that gap.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3389.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Opinions on Irrigation Water Management Tools and Alternative Irrigation Sources by Farmers from the Delta Region of Mississippi","authors":"Gurbir Singh,&nbsp;Nicolas E. Quintana Ashwell,&nbsp;Gurpreet Kaur,&nbsp;Drew Gholson,&nbsp;Martin A. Locke,&nbsp;L.J. Krutz,&nbsp;Trey Cooke","doi":"10.1111/j.1936-704X.2023.3395.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3395.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Water withdrawals for irrigation at an unsustainable rate resulted in a decline in the groundwater levels in the Mississippi River Valley Alluvial Aquifer (MRVAA) in the central southern USA. This drawdown of groundwater threatens agricultural production in the Mississippi Delta, an important agricultural region in the state of Mississippi, USA. Effective and efficient use of available resources is important to sustain and enhance agricultural productivity in this area. This study assessed the opinions of farmers on water conservation management practices and technologies that improve irrigation management and save water in the Mississippi Delta region based on data collected in an irrigation survey conducted in 2012. Most landowners believed that water conservation practices were effective in reducing irrigation water use without reducing maximum crop yields and have a positive return on investment. Land forming, tailwater recovery system, on-farm storage, instream weirs to pond surface water, computerized hole selection for furrow irrigation, short irrigation runs, and irrigation scheduling were considered efficient water conservation technologies by landowners. Perceptions about use of different practices also depend upon the crops produced by the respondents. About 20 to 24% and 14.9 to 86% of survey respondents thought that on-farm storage and center pivot, respectively, were inefficient water conservation practices for irrigating crops in the Mississippi Delta. The adoption of these practices may be increased if the landowners know the economic returns of implementing them.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3395.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sea Grant Center for Great Lakes Literacy Shipboard Science Workshop Evaluation","authors":"Jennifer Hunnell,&nbsp;Heather A. Triezenberg,&nbsp;Brandon C. Schroeder,&nbsp;Meaghan J. Gass","doi":"10.1111/j.1936-704X.2023.3390.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3390.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Youth have an important role in current and future Great Lakes stewardship. Educating youth and empowering them to be Great Lakes stewards requires educators to be knowledgeable and confident, and therefore more likely to engage in teaching Great Lakes literacy activities in their classroom, thus contributing to a Great Lakes-literate public. The Shipboard Science Workshop (SSW) for educators is a vessel-based professional learning opportunity aboard the U.S. Environmental Protection Agency's research vessel (R/V) <i>Lake Guardian</i>. During the week-long SSW, educators learn from professional scientists, Sea Grant staff, and each other about Great Lakes research through the lenses of place-based education (PBE) and Next Generation Science Standards (NGSS). The goals of the SSW are to (1) enhance understanding of scientific concepts, processes, or techniques; (2) influence changes in teaching practices, curriculum, or personal behaviors; (3) influence communication and promotion of pro-environmental behaviors with others; and (4) establish communities of practice, including educators, scientists, and SSW coordinators. Herein, we present the findings of a 10-month follow-up survey to evaluate the SSW efficacy from 2016-2019. Overall, the SSW appears to have achieved its goals. We discuss the implications of these results within the PBE framework for shifting educators’ classroom approaches and empowering youth inquiry and leadership on complex Great Lakes issues.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3390.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Western Water Network: A Case Study in Water Network Formation","authors":"Travis Warziniak,&nbsp;Robert Heinse,&nbsp;Alexander Fernald,&nbsp;Michael Gaffney,&nbsp;Kristiana Hansen,&nbsp;Bret Hess,&nbsp;Lyla Houglum,&nbsp;Ginger Paige,&nbsp;Qin Zhang","doi":"10.1111/j.1936-704X.2023.3391.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3391.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Increased water scarcity and drought frequency are creating water management challenges for many communities in the western U.S. In response, the Western Association of Agricultural Experiment Station Directors sponsored a virtual summit in August 2020 to develop a framework for identifying and addressing the most pressing water issues in the western United States (the West). Summit attendees were research scientists, university extension specialists and professionals, and federal/state agency representatives with knowledge and expertise of water management in the West. The summit elicited opinions from 54 experts on pressing water issues and possible methods for addressing them. A follow-on survey of 49 individuals increased the depth and breadth of perspectives collected. Summit and survey results show that water scarcity is a growing concern among water scientists and other experts. Increased water scarcity is leading to overallocated river basins, depleted aquifers, and elevated tensions between water use sectors. Summit and survey participants emphasized the need for increased integration—across research, extension, and education efforts; across the social and physical sciences; across uses (including ecological); and across surface and groundwater systems. These results serve as a sensing of what many of our colleagues believe to be the major western water issues over the next 30 years and, in some cases, possible solutions for addressing them. The expert opinions elicited through the summit and survey informed the creation of the Western Water Network, whose mission is to advance collaborative, proactive, science-based water decision-making that supports dynamic human and natural systems in the West.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3391.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Relevance of Water Education in Children: Perspectives from the Americas","authors":"Pablo A. Garcia-Chevesich,&nbsp;Rafael Val,&nbsp;Gisella Martínez,&nbsp;Adriana Álvarez,&nbsp;Oscar Luna,&nbsp;Paloma Maya,&nbsp;Roberto Pizarro,&nbsp;Maite Pizarro-Granada,&nbsp;John E. McCray","doi":"10.1111/j.1936-704X.2023.3392.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3392.x","url":null,"abstract":"<p><b>W</b>ater-related challenges and environmental issues persist globally, including in Latin America, the Caribbean, and United States. An imperative step to improve the water management issues faced by many countries is to educate children on this important topic. Even though water conservation is not found in the basic (formal) education curricula of most the Americas (including the United States), the topic has been present in many parts of this region, and the efforts made are worthy of admiration, with decades of hard work. Moreover, the regional experience (which was recently documented in the book “<i>Water education in children: the experience from 11 countries in Latin America and the Caribbean</i>”) indicates that, to reach an acceptable level of efficiency, children's education programs focused on water must be flexible, according to the reality of the region and the socioeconomic level of the students, and should not include solutions that do not involve children, for example, water supply infrastructure. Similarly, methods that are not recommended when trying to educate children about water conservation are those based on negative emotions (e.g. “if we don't save water, we'll face a catastrophe”); so techniques based on positive emotions work better. Another common mistake is to use material that a certain age group will not be able to process because their brains haven't yet developed, for example, their <i>scientific reasoning</i> (e.g. getting them involved in water quality projects during early ages); in fact, neuroscience is a crucial part of an effective water education program. Finally, a regional pattern is the lack of indicators or evaluations on the effects of the different educational methods applied on family water consumption, even in the United States (the most advanced country on the subject).</p><p>Government entities have played an important role in children's education applied to this important topic in the region (e.g. “<i>USGS water science school</i>” in the United States). Furthermore, what has given better results is intra- and inter-institutional collaboration, such as ministries of education, culture, water resources, and the environment, etc., collaborating with NGOs, municipalities, universities, and schools, without excluding the private sector. In other words, joint work to care for water can contribute to citizen involvement beyond the school's classroom.</p><p>Another important fact is that children's education programs on water care should have continuity and promote a protagonist role of children in solving the problem (e.g. <i>Children defenders of water</i> in Colombia, <i>Little plumber teams</i> in Cuba, <i>The super inspector of water in Mexico</i>, <i>Water watchers</i> in Peru). Similarly, it is also important to train teachers, who are the ones directly in charge of educating children on different environmental issues, including water care, a topic in which Chile has taken the lead.</p><p>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3392.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Producer Perceptions on the Value and Availability of Water for Irrigation in the Mississippi Delta","authors":"Gurpreet Kaur,&nbsp;Nicolas E. Quintana Ashwell,&nbsp;Gurbir Singh,&nbsp;Drew Gholson,&nbsp;Martin A. Locke,&nbsp;L.J. Krutz,&nbsp;Trey Cooke","doi":"10.1111/j.1936-704X.2023.3393.x","DOIUrl":"https://doi.org/10.1111/j.1936-704X.2023.3393.x","url":null,"abstract":"<div>\u0000 \u0000 <p>The agricultural production in the Mississippi Delta is threatened by the water level declines in the Mississippi River Valley Alluvial Aquifer (MRVAA). This study assesses the growers’ perceptions of the value and availability of water for irrigation based on data collected in a survey in 2012 in the Delta region of Mississippi, USA. The total cooperation rate for this survey was 79.3%. The results showed that 97.39% (448 out of 460) of respondents believed that water is important for farming in the Delta region of the MRVAA. Fifty-two percent of the survey respondents agreed that the major cause of groundwater depletion is agricultural irrigation water use. More than 50% of the survey respondents believed there is sufficient water in the Delta region, but it is not managed properly. The value of water for irrigation ranged from $463 to $690 per ha for corn (<i>Zea mays</i> L.), $399 to $615 per ha for soybean (<i>Glycine max</i> L.), and $223 to $336 per ha for cotton (<i>Gossypium hirsutum</i> L.). The majority of the respondents considered that there is a need for regulation of water use to protect the aquifer and ensure water availability in the future.</p></div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2023.3393.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154393","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Remote-Sensing Method for Monitoring Suspended-Sediment Concentration on the Middle-Mississippi and Lower-Missouri Rivers","authors":"Megan J. Martinez,&nbsp;Amanda L. Cox","doi":"10.1111/j.1936-704X.2022.3378.x","DOIUrl":"10.1111/j.1936-704X.2022.3378.x","url":null,"abstract":"<div>\u0000 \u0000 <p>Sediment transport, erosion, and deposition are primary drivers of river geomorphic processes and ecological services. Suspended-sediment concentration (SSC) is an important parameter for evaluating these processes and is accordingly of significant interest to engineers, scientists, and water resource managers. The United States Geological Survey (USGS) previously operated nine daily SSC gauging stations along the Mississippi River, with operating dates ranging from 1974 to 2018. Currently, there are no USGS gauging stations reporting daily SSC values along the Mississippi River. For this study, regression models were developed to compute the SSC along the Middle-Mississippi River (MMR) and Lower-Missouri River (LMOR) using publicly and freely available Landsat imagery. Surface reflectance data from Landsat satellites were used with USGS-measured SSC to develop regression models for three different Landsat sensors (Landsat 8 OLI/TIRS, Landsat 7 ETM+, and Landsat 4-5 TM). Previous models published for predicting SSC in the MMR and LMOR from Landsat images have a linear-regression form and have provided invalid negative values when extrapolated outside of the dataset used for development. The objectives of this study were to develop reflectance-SSC regression models using a power-function form and demonstrate their extrapolation performance using multiple novel applications in the MMR basin. The reflectance-SSC regression models were applied to the following conditions: 1) mixing at the Mississippi and Missouri River confluence, 2) point-source pollution, and 3) SSC changes along the entire MMR reach for a range of discharges. The regression models were also used to develop sediment rating curves for the four largest tributaries of the MMR.</p>\u0000 </div>","PeriodicalId":45920,"journal":{"name":"Journal of Contemporary Water Research & Education","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/j.1936-704X.2022.3378.x","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41391438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}