Bozorg Posted May 21, 2008 Report Share Posted May 21, 2008 Hello ; I'd appreciate it if some one could clarify the followings: 1-what is the 'AdjSlope' & how it is calculated in WMS. 2-Every now & then, I get a 'Sinuosity Factor' smaller than ONE for some subbasins, when deploying SRTM_v3(2006),90-m DEM. Could that be due to the scale of the DEM? 3-What's a basin shape factor ,'Shapefact' ; is it the same as the so-called 'Compactness/Gravillious Coeff.' ? Thanks in advance for your time. MBz. Quote Link to comment Share on other sites More sharing options...

Chris Smemoe Posted May 27, 2008 Report Share Posted May 27, 2008 Hello ; I'd appreciate it if some one could clarify the followings: 1-what is the 'AdjSlope' & how it is calculated in WMS. 2-Every now & then, I get a 'Sinuosity Factor' smaller than ONE for some subbasins, when deploying SRTM_v3(2006),90-m DEM. Could that be due to the scale of the DEM? 3-What's a basin shape factor ,'Shapefact' ; is it the same as the so-called 'Compactness/Gravillious Coeff.' ? Thanks in advance for your time. MBz. 1. The "adjslope" or adjusted slope is a value based on the maximum flow distance slope that is computed for some Time of Concentration calculations used in Maricopa County, Arizona. It's computed based on a 7th-degree polynomial equation from the original slope. If the slope in feet/mile is greater than 313, it's out of range and the value is just set to 313. 2. The sinuosity factor is computed as the maximum stream length / basin length. 3. The shape factor is computed as the (basin length)^2 / basin area. Quote Link to comment Share on other sites More sharing options...

Bozorg Posted May 27, 2008 Author Report Share Posted May 27, 2008 1. The "adjslope" or adjusted slope is a value based on the maximum flow distance slope that is computed for some Time of Concentration calculations used in Maricopa County, Arizona. It's computed based on a 7th-degree polynomial equation from the original slope. If the slope in feet/mile is greater than 313, it's out of range and the value is just set to 313. 2. The sinuosity factor is computed as the maximum stream length / basin length. 3. The shape factor is computed as the (basin length)^2 / basin area. Hello Chris ; Thanks a lot, for your clarifing note. MBz. Quote Link to comment Share on other sites More sharing options...

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