topic calculate stream length from one point or polygon to another in Water Resources Questions https://community.esri.com/t5/water-resources-questions/calculate-stream-length-from-one-point-or-polygon/m-p/333650#M1625 <HTML><HEAD></HEAD><BODY><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I haven't found a good method yet for calculating distance upstream from one point or polygon to another. I'm trying to relate water quality data at a stream gage with upstream land uses (agriculture, etc) and nonpoint pollution sources.</SPAN><BR /><BR /><SPAN>Can anyone refer me to studies or methods that would illustrate this and give me some good ideas of how to proceed.</SPAN><BR /><BR /><SPAN>I've produced flow length and accumulation grids, but am not sure how to actually use them.</SPAN><BR /><BR /><SPAN>Thank You!</SPAN></BODY></HTML> Tue, 14 Jan 2014 20:17:22 GMT PamFroemke 2014-01-14T20:17:22Z calculate stream length from one point or polygon to another https://community.esri.com/t5/water-resources-questions/calculate-stream-length-from-one-point-or-polygon/m-p/333650#M1625 <HTML><HEAD></HEAD><BODY><SPAN>Hello,</SPAN><BR /><BR /><SPAN>I haven't found a good method yet for calculating distance upstream from one point or polygon to another. I'm trying to relate water quality data at a stream gage with upstream land uses (agriculture, etc) and nonpoint pollution sources.</SPAN><BR /><BR /><SPAN>Can anyone refer me to studies or methods that would illustrate this and give me some good ideas of how to proceed.</SPAN><BR /><BR /><SPAN>I've produced flow length and accumulation grids, but am not sure how to actually use them.</SPAN><BR /><BR /><SPAN>Thank You!</SPAN></BODY></HTML> Tue, 14 Jan 2014 20:17:22 GMT https://community.esri.com/t5/water-resources-questions/calculate-stream-length-from-one-point-or-polygon/m-p/333650#M1625 PamFroemke 2014-01-14T20:17:22Z