Bozorg 0 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 post Share on other sites

Chris Smemoe 1 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 post Share on other sites

Bozorg 0 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 post Share on other sites

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