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Water quality modelling
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<h2 id="building-a-model">Building A Model</h2> <p>Water quality models have different information, but generally have the same purpose, which is to provide evidentiary support of water issues. Models can be either deterministic or statistical depending on the scale with the base model,<a class="footnote-ref" id="fnref:8" href="#fn:8"><sup>8</sup></a> which is dependent on if the area is on a local, regional, or a <a href="/facts/Globe/8Pqs2IuQ">global</a> scale. Another aspect to consider for a model is what needs to be understood or predicted about that research area along with setting up any parameters to define the research. Another aspect of building a water quality model is knowing the audience and the exact purpose for presenting data like to enhance water quality management<a class="footnote-ref" id="fnref:9" href="#fn:9"><sup>9</sup></a> for <a href="/facts/Water_quality_law/3QkcISD2">water quality law</a> makers for the best possible outcomes. </p> <h2 id="formulations-and--associated-constants">Formulations and associated Constants</h2> <h3>Water quality is modeled by one or more of the following formulations</h3> <ul><li>Advective Transport formulation</li> <li>Dispersive Transport formulation</li> <li>Surface Heat Budget formulation</li> <li>Dissolved Oxygen Saturation formulation</li> <li>Reaeration formulation</li> <li>Carbonaceous Deoxygenation formulation</li> <li>Nitrogenous Biochemical Oxygen Demand formulation</li> <li>Sediment oxygen demand formulation (SOD)</li> <li>Photosynthesis and Respiration formulation</li> <li>pH and Alkalinity formulation</li> <li>Nutrients formulation (fertilizers)</li> <li>Algae formulation</li> <li>Zooplankton formulation</li> <li>Coliform bacteria formulation (e.g. <i><a href="/facts/Escherichia_coli/nR4Gvl56">Escherichia coli</a></i> )</li></ul> <h3>SPARROW Models</h3> <p>A SPARROW model is a SPAtially-Referenced Regression on Watershed attributes, which helps integrate water quality data with landscape information.<a class="footnote-ref" id="fnref:10" href="#fn:10"><sup>10</sup></a> More specifically the <a href="/facts/United_States_Geological_Survey/nVaGtMjl">USGS</a> used this model to display long-term changes within watersheds to further explain in-stream water measurement in relation to upstream sources, water quality, and watershed properties. These models predict data for various spatial scales and integrate streamflow data with water quality at numerous locations across the US.<a class="footnote-ref" id="fnref:11" href="#fn:11"><sup>11</sup></a> A SPARROW model used by the USGS focused on the nutrients in the Nation's major rivers and estuaries; this model helped create a better understanding of where nutrients come from, where they are transported to while in the water bodies, and where they end up (reservoirs, other estuaries, etc.).<a class="footnote-ref" id="fnref:12" href="#fn:12"><sup>12</sup></a> </p> <h2 id="see-also">See also</h2> <ul> <li>Water portal</li></ul> <ul><li><a href="/facts/Hydrological_transport_model/l7DY2NMN">Hydrological transport models</a></li> <li><a href="/facts/Stochastic_Empirical_Loading_and_Dilution_Model/mV9uxI7N">Stochastic Empirical Loading and Dilution Model</a></li> <li><a href="/facts/Storm_Water_Management_Model/SIQMHgKV">Storm Water Management Model</a></li> <li><a href="/facts/Water/0lkXnJPK">Volumes of water on earth</a></li> <li><a href="/facts/Water_resources/2j7FJlLE">Water resources</a></li> <li><a href="/facts/Water_quality/PcEERmpX">Water quality</a></li> <li><a href="/facts/Wastewater_quality_indicators/ACRuSoku">Wastewater quality indicators</a></li> <li><a href="/facts/Streeter-Phelps_equation/qXSoEvhB">Streeter-Phelps equation</a></li> <li><a href="/facts/PCLake/L1dD9WcW">PCLake</a></li></ul> <ul><li>U.S. Environmental Protection Agency (EPA). Environmental Research Laboratory, Athens, GA (1985). <a href="http://www.ecy.wa.gov/programs/eap/models/rates_and_constants/index.html">"Rates, Constants and Kinetics Formulations in Surface Water Quality Modeling."</a> 2nd ed. Document no. EPA/600/3-85/040.</li></ul> <h2 id="external-links">External links</h2> <ul><li><a href="https://permanent.fdlp.gov/LPS113676/LPS113676/pubs.usgs.gov/fs/2009/3019/pdf/fs_2009_3019.pdf">SPARROW Water-Quality Modeling - US Geological Survey</a>- US Geological Survey</li> <li><a href="http://www.epa.gov/waterscience/basins/">BASINS</a> - EPA environmental analysis system integrating GIS, national watershed data, environmental assessment and modeling tools</li> <li><a href="http://www.epa.gov/waterscience/wqm/">Water Quality Models and Tools</a> - EPA</li> <li><a href="http://www.ecy.wa.gov/programs/eap/models/">Models for Total Maximum Daily Load Studies</a> - Washington State Department of Ecology</li> <li><a href="http://www.toolkit.net.au">Catchment Modelling Toolkit</a> - <a href="/facts/EWater/5460m8IN">eWater</a> Cooperative Research Centre, Australia</li> <li><a href="http://www.weap21.org">Water Evaluation And Planning (WEAP)</a>, an integrated water resources planning model, including water quality - Stockholm Environmental Institute (US)</li> <li><a href="https://doi.org/10.5066/F7BG2M33">Stochastic Empirical Loading and Dilution Model (SELDM)</a> - US Geological Survey stormwater quality model</li> <li><a href="https://www.hec.usace.army.mil/software/waterquality">U.S. Army Corps of Engineers Water Quality</a> - New water quality modeling software developed by the U.S. Army Corps of Engineers</li></ul> <h2 id="references">References</h2> <ol> <li id="fn:1"><p>Tang, Ting; Strokal, Maryna; van Vliet, Michelle T.H.; Seuntjens, Piet; Burek, Peter; Kroeze, Carolien; Langan, Simon; Wada, Yoshihide (February 2019). "Bridging global, basin and local-scale water quality modeling towards enhancing water quality management worldwide". Current Opinion in Environmental Sustainability. 36: 39–48. Bibcode:2019COES...36...39T. doi:10.1016/j.cosust.2018.10.004. hdl:10067/1586430151162165141. <a href="https://doi.org/10.1016%2Fj.cosust.2018.10.004" target="_blank">https://doi.org/10.1016%2Fj.cosust.2018.10.004</a> <a href="#fnref:1" class="footnote-back-ref">↩</a></p></li> <li id="fn:2"><p>Preston, S.D. "SPARROW MODELING—Enhancing Understanding of the Nation's Water Quality". USGS – via US Dep of Interior. <a href="#fnref:2" class="footnote-back-ref">↩</a></p></li> <li id="fn:3"><p>Bozorg-Haddad, Omid; Soleimani, Shima; Loáiciga, Hugo A. (July 2017). "Modeling Water-Quality Parameters Using Genetic Algorithm–Least Squares Support Vector Regression and Genetic Programming". Journal of Environmental Engineering. 143 (7): 04017021. doi:10.1061/(ASCE)EE.1943-7870.0001217. ISSN 0733-9372. <a href="http://ascelibrary.org/doi/10.1061/%28ASCE%29EE.1943-7870.0001217" target="_blank">http://ascelibrary.org/doi/10.1061/%28ASCE%29EE.1943-7870.0001217</a> <a href="#fnref:3" class="footnote-back-ref">↩</a></p></li> <li id="fn:4"><p>Tang, Ting; Strokal, Maryna; van Vliet, Michelle T.H.; Seuntjens, Piet; Burek, Peter; Kroeze, Carolien; Langan, Simon; Wada, Yoshihide (February 2019). "Bridging global, basin and local-scale water quality modeling towards enhancing water quality management worldwide". Current Opinion in Environmental Sustainability. 36: 39–48. Bibcode:2019COES...36...39T. doi:10.1016/j.cosust.2018.10.004. hdl:10067/1586430151162165141. <a href="https://doi.org/10.1016%2Fj.cosust.2018.10.004" target="_blank">https://doi.org/10.1016%2Fj.cosust.2018.10.004</a> <a href="#fnref:4" class="footnote-back-ref">↩</a></p></li> <li id="fn:5"><p>Zhang, Wanshun; Wang, Yan; Peng, Hong; Li, Yiting; Tang, Jushan; Wu, K. Benjamin (February 2010). "A Coupled Water Quantity–Quality Model for Water Allocation Analysis". Water Resources Management. 24 (3): 485–511. doi:10.1007/s11269-009-9456-8. ISSN 0920-4741. S2CID 153922326. <a href="http://link.springer.com/10.1007/s11269-009-9456-8" target="_blank">http://link.springer.com/10.1007/s11269-009-9456-8</a> <a href="#fnref:5" class="footnote-back-ref">↩</a></p></li> <li id="fn:6"><p>Vallet, B.; Muschalla, D.; Lessard, P.; Vanrolleghem, P.A. (2014-04-03). "A new dynamic water quality model for stormwater basins as a tool for urban runoff management: Concept and validation". Urban Water Journal. 11 (3): 211–220. doi:10.1080/1573062X.2013.775313. ISSN 1573-062X. S2CID 111045671. <a href="http://www.tandfonline.com/doi/abs/10.1080/1573062X.2013.775313" target="_blank">http://www.tandfonline.com/doi/abs/10.1080/1573062X.2013.775313</a> <a href="#fnref:6" class="footnote-back-ref">↩</a></p></li> <li id="fn:7"><p>Liu, Yaoze; Li, Sisi; Wallace, Carlington W.; Chaubey, Indrajeet; Flanagan, Dennis C.; Theller, Lawrence O.; Engel, Bernard A. (September 2017). "Comparison of Computer Models for Estimating Hydrology and Water Quality in an Agricultural Watershed". Water Resources Management. 31 (11): 3641–3665. doi:10.1007/s11269-017-1691-9. ISSN 0920-4741. S2CID 158035959. <a href="http://link.springer.com/10.1007/s11269-017-1691-9" target="_blank">http://link.springer.com/10.1007/s11269-017-1691-9</a> <a href="#fnref:7" class="footnote-back-ref">↩</a></p></li> <li id="fn:8"><p>Preston, S.D. "SPARROW MODELING—Enhancing Understanding of the Nation's Water Quality". USGS – via US Dep of Interior. <a href="#fnref:8" class="footnote-back-ref">↩</a></p></li> <li id="fn:9"><p>Tang, Ting; Strokal, Maryna; Van Vliet, Michelle T.H.; Seuntjens, Piet; Burek, Peter; Kroeze, Carolien; Langan, Simon; Wada, Yoshihide (2019-02-01). "Bridging global, basin and local-scale water quality modeling towards enhancing water quality management worldwide". Current Opinion in Environmental Sustainability. 36: 39–48. Bibcode:2019COES...36...39T. doi:10.1016/j.cosust.2018.10.004. hdl:10067/1586430151162165141. ISSN 1877-3435. <a href="https://doi.org/10.1016%2Fj.cosust.2018.10.004" target="_blank">https://doi.org/10.1016%2Fj.cosust.2018.10.004</a> <a href="#fnref:9" class="footnote-back-ref">↩</a></p></li> <li id="fn:10"><p>Preston, S.D. "SPARROW MODELING—Enhancing Understanding of the Nation's Water Quality". USGS – via US Dep of Interior. <a href="#fnref:10" class="footnote-back-ref">↩</a></p></li> <li id="fn:11"><p>Preston, S.D. "SPARROW MODELING—Enhancing Understanding of the Nation's Water Quality". USGS – via US Dep of Interior. <a href="#fnref:11" class="footnote-back-ref">↩</a></p></li> <li id="fn:12"><p>Preston, S.D. "SPARROW MODELING—Enhancing Understanding of the Nation's Water Quality". USGS – via US Dep of Interior. <a href="#fnref:12" class="footnote-back-ref">↩</a></p></li> </ol>