topic How to Calculate Worst Case Discharge for a Pipeline in ArcGIS Spatial Analyst Questions https://community.esri.com/t5/arcgis-spatial-analyst-questions/how-to-calculate-worst-case-discharge-for-a/m-p/418785#M5879 <HTML><HEAD></HEAD><BODY><SPAN>I'm doing research on how I can calculate worst case discharge for a pipeline. I'm guessing I would use Spatial Analyst/Flow Direction and Flow Length. The data that I should be using is a DEM converted to Points or contours a buffer around the pipeline and a polyline of the pipeline. Please let me know if I'm on the right track or if I do need another extension. Please be specific. Thanks.</SPAN></BODY></HTML> Wed, 18 Jun 2014 16:16:13 GMT ChrisSlinko 2014-06-18T16:16:13Z How to Calculate Worst Case Discharge for a Pipeline https://community.esri.com/t5/arcgis-spatial-analyst-questions/how-to-calculate-worst-case-discharge-for-a/m-p/418785#M5879 <HTML><HEAD></HEAD><BODY><SPAN>I'm doing research on how I can calculate worst case discharge for a pipeline. I'm guessing I would use Spatial Analyst/Flow Direction and Flow Length. The data that I should be using is a DEM converted to Points or contours a buffer around the pipeline and a polyline of the pipeline. Please let me know if I'm on the right track or if I do need another extension. Please be specific. Thanks.</SPAN></BODY></HTML> Wed, 18 Jun 2014 16:16:13 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/how-to-calculate-worst-case-discharge-for-a/m-p/418785#M5879 ChrisSlinko 2014-06-18T16:16:13Z Re: How to Calculate Worst Case Discharge for a Pipeline https://community.esri.com/t5/arcgis-spatial-analyst-questions/how-to-calculate-worst-case-discharge-for-a/m-p/418786#M5880 <HTML><HEAD></HEAD><BODY><SPAN>Hi Chris, you're on the right track.</SPAN><BR /><SPAN>Back in the day i used to model drainage channels in open pit mines. In those cases i would burn the channel into the dem to ensure the water flowed into and down the channel. You can then use 'flow accumulation' to model a particular rainfall event. This would give you a worst case scenario assuming no infiltration, evaporation or influence from soils and vegetation.</SPAN><BR /><BR /><SPAN>If your doing a lot of hydrological work you should check out:</SPAN><BR /><A href="http://resources.arcgis.com/en/communities/hydro/">The Hydrology community</A><BR /><A href="http://forums.arcgis.com/forums/88-Arc-Hydro">The Arc Hydro forums</A><BR /><BR /><SPAN>The Arc Hydro tools, which you can download from the community site, also provides a bunch of tools and models to automate much of the work.</SPAN></BODY></HTML> Wed, 18 Jun 2014 20:16:11 GMT https://community.esri.com/t5/arcgis-spatial-analyst-questions/how-to-calculate-worst-case-discharge-for-a/m-p/418786#M5880 Anonymous User 2014-06-18T20:16:11Z