SCS-CN parameter determination from observed rainfall runoff
\ndata. A critical review.
\nKonstantinos Soulis, Stergia Palli Gravani, and Dionissios Kalivas
\nAgricultural University of Athens, Natural Resources Management and Agricultural Engineering, Athens, Greece
\n(soco@aua.gr)
\nOne the most difficult challenges in applied hydrology is predicting runoff in ungauged or poorly
\ngauged watersheds. Thus, simple approaches for runoff estimation are especially useful in
\nhydrologic applications. A simple, well established, and widely used technique for predicting the
\ndirect runoff depths of rainfall events is the Soil Conservation Service – Curve Number (SCS-CN)
\nmethod. Due to its straightforward but well-proven approach, readily available and well
\ndocumented environmental inputs, and incorporation of numerous variables influencing runoff
\ngeneration into a single CN parameter, it quickly rose to prominence among engineers and
\npractitioners. Tables can be used to identify the CN parameter values corresponding to prevailing
\nsoil, land cover and land management conditions. However, it is always better to estimate the CN
\nvalue using observed rainfall-runoff (P-Q) data when available. Estimating appropriate CN values
\nfor additional soil \u2013 land cover conditions and additional regions is also critical for extending and
\nupdating the method\u2019s documentation given that the SCS-CN approach is extremely sensitive to
\nvariations in the CN values.<\/p>\n","protected":false},"excerpt":{"rendered":"
SCS-CN parameter determination from observed rainfall runoff data. A critical review. Konstantinos Soulis, Stergia Palli Gravani, and Dionissios Kalivas Agricultural University of Athens, Natural Resources Management and Agricultural Engineering, Athens, Greece (soco@aua.gr) One the most difficult challenges in applied hydrology is predicting runoff in ungauged or poorly gauged watersheds. Thus, simple approaches for runoff estimation are especially useful in hydrologic applications. A simple, well established, and widely used technique for predicting the direct runoff depths of rainfall events is the Soil Conservation Service – Curve Number (SCS-CN) method. Due to its straightforward but well-proven approach, readily available and well documented environmental inputs, and incorporation of numerous variables influencing runoff generation into a single CN parameter, it quickly rose to prominence among engineers and practitioners. Tables can be used to identify the CN parameter values corresponding to prevailing soil, land cover and land management conditions. However, it is always better to estimate the CN value using observed rainfall-runoff (P-Q) data when available. Estimating appropriate CN values for additional soil \u2013 land cover conditions and additional regions is also critical for extending and updating the method\u2019s documentation given that the SCS-CN approach is extremely sensitive to variations in the CN values.<\/p>\n","protected":false},"author":1,"featured_media":840,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-839","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/posts\/839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=839"}],"version-history":[{"count":1,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/posts\/839\/revisions"}],"predecessor-version":[{"id":841,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/posts\/839\/revisions\/841"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=\/wp\/v2\/media\/840"}],"wp:attachment":[{"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=839"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=839"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dt-agro.aua.gr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}