<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px"><div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_1_1488177186676_6391" style="display: block;"><font id="yui_3_16_0_1_1488177186676_6398" face="Arial" size="2"></font><br clear="none"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 14px;" id="yui_3_16_0_1_1488177186676_6390"><div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1488177186676_6389"><div class="y_msg_container" id="yui_3_16_0_1_1488177186676_6399"><div id="yiv3416740753"><div class="yiv3416740753yqt6174813400" id="yiv3416740753yqtfd01466"><div id="yui_3_16_0_1_1488177186676_6402"><div style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px;" id="yui_3_16_0_1_1488177186676_6401"><div class="yiv3416740753yahoo_quoted" id="yiv3416740753yui_3_16_0_1_1487917570933_21444" style="display:block;"><div id="yiv3416740753yui_3_16_0_1_1487917570933_21443" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px;"><div id="yiv3416740753yui_3_16_0_1_1487917570933_21442" style="font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px;"><div class="yiv3416740753y_msg_container" id="yiv3416740753yui_3_16_0_1_1487917570933_21484"><div id="yiv3416740753"><div id="yiv3416740753yui_3_16_0_1_1487917570933_21486"><div id="yiv3416740753yui_3_16_0_1_1487917570933_21485" style="color:#000;background-color:#fff;font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:14px;"><div id="yiv3416740753yui_3_16_0_1_1487917570933_10398">Dear community,</div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_10506">I gave a try to r.hazard.flood and got som erroneous results, that indicate flood hazard (value 1) on the hillsides. Is that possible?<br clear="none"></div><div id="yiv3416740753yui_3_16_0_1_1487917570933_10578"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_10743">I am running r.flood.hazard in GRASS GIS 7.2.0 on a windows 10 machine. The DTM used has 1m resolution.</div><div id="yiv3416740753yui_3_16_0_1_1487917570933_10768"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_10770">Not error messages are produced-- (below the command output), but the results do not represent the reality. The MTI map on the other hand, looks correct to me. Negative values on the hillside and positive values in the floodplain (see attachments).<br clear="none"></div><div id="yiv3416740753yui_3_16_0_1_1487917570933_10867"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_10970">(Fri Feb 24 07:54:22 2017) <br id="yiv3416740753yui_3_16_0_1_1487917570933_10936" clear="none">r.hazard.flood --overwrite map=driva_sk_1m@PERMANENT flood=floodHazard mti=MTIFlood<br id="yiv3416740753yui_3_16_0_1_1487917570933_10937" clear="none">Cellsize : 1.0<br id="yiv3416740753yui_3_16_0_1_1487917570933_10938" clear="none">SECTION 1a (of 4): Initiating Memory.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10939" clear="none">SECTION 1b (of 4): Determining Offmap Flow.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10940" clear="none">SECTION 2: A* Search.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10941" clear="none">SECTION 3a: Accumulating Surface Flow with MFD.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10942" clear="none">SECTION 3b: Adjusting drainage directions.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10943" clear="none">SECTION 4: Closing Maps.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10944" clear="none">Writing out only positive flow accumulation values.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10945" clear="none">Cells with a likely underestimate for flow accumulation can no longer be identified.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10946" clear="none">Flow accumulation done.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10947" clear="none">Slope raster map <r_slope> complete<br id="yiv3416740753yui_3_16_0_1_1487917570933_10948" clear="none">Slope map done.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10949" clear="none">Exponent : 0.016<br id="yiv3416740753yui_3_16_0_1_1487917570933_10950" clear="none">MTI threshold : 2.45624<br id="yiv3416740753yui_3_16_0_1_1487917570933_10951" clear="none">Calculating MTI raster map..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10952" clear="none">Cleaning up..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10953" clear="none">Calculating flood raster map..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10954" clear="none">Running r.clump..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10955" clear="none">Pass 1 of 2...<br id="yiv3416740753yui_3_16_0_1_1487917570933_10956" clear="none">Generating renumbering scheme...<br id="yiv3416740753yui_3_16_0_1_1487917570933_10957" clear="none">Pass 2 of 2...<br id="yiv3416740753yui_3_16_0_1_1487917570933_10958" clear="none">r.clump complete. 19533 clumps.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10959" clear="none">Deleting areas of less than 1000000 cells..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10960" clear="none">Reading...<br id="yiv3416740753yui_3_16_0_1_1487917570933_10961" clear="none">Writing...<br id="yiv3416740753yui_3_16_0_1_1487917570933_10962" clear="none">Done!<br id="yiv3416740753yui_3_16_0_1_1487917570933_10963" clear="none">Cleaning up..<br id="yiv3416740753yui_3_16_0_1_1487917570933_10964" clear="none">Removing raster <r_clump><br id="yiv3416740753yui_3_16_0_1_1487917570933_10965" clear="none">Removing raster <r_flood_th><br id="yiv3416740753yui_3_16_0_1_1487917570933_10966" clear="none">Removing raster <r_flood><br id="yiv3416740753yui_3_16_0_1_1487917570933_10967" clear="none">Done.<br id="yiv3416740753yui_3_16_0_1_1487917570933_10968" clear="none">(Fri Feb 24 07:54:53 2017) Command finished (31 sec) <br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11454"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11542">Some other statistics...<br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11545"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11455">r.univar map=MTIFlood@PERMANENT <br id="yiv3416740753yui_3_16_0_1_1487917570933_11522" clear="none">total null and non-null cells: 9016440<br id="yiv3416740753yui_3_16_0_1_1487917570933_11523" clear="none">total null cells: 77829<br id="yiv3416740753yui_3_16_0_1_1487917570933_11524" clear="none">Of the non-null cells:<br id="yiv3416740753yui_3_16_0_1_1487917570933_11525" clear="none">----------------------<br id="yiv3416740753yui_3_16_0_1_1487917570933_11526" clear="none">n: 8938611<br id="yiv3416740753yui_3_16_0_1_1487917570933_11527" clear="none">minimum: -3.67184<br id="yiv3416740753yui_3_16_0_1_1487917570933_11528" clear="none">maximum: 11.1875<br id="yiv3416740753yui_3_16_0_1_1487917570933_11529" clear="none">range: 14.8593<br id="yiv3416740753yui_3_16_0_1_1487917570933_11530" clear="none">mean: 1.74111<br id="yiv3416740753yui_3_16_0_1_1487917570933_11531" clear="none">mean of absolute values: 1.95274<br id="yiv3416740753yui_3_16_0_1_1487917570933_11532" clear="none">standard deviation: 2.18821<br id="yiv3416740753yui_3_16_0_1_1487917570933_11533" clear="none">variance: 4.78828<br id="yiv3416740753yui_3_16_0_1_1487917570933_11534" clear="none">variation coefficient: 125.679 %<br id="yiv3416740753yui_3_16_0_1_1487917570933_11535" clear="none">sum: 15563100.8518932<br id="yiv3416740753yui_3_16_0_1_1487917570933_11536" clear="none">(Fri Feb 24 08:05:33 2017) Command finished (1 sec) <br id="yiv3416740753yui_3_16_0_1_1487917570933_11537" clear="none"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11586"> <br id="yiv3416740753yui_3_16_0_1_1487917570933_10969" clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11009"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11008">I would appreciate any hint.</div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11624">Have a nice Weekend</div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11625"><br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11626">Rengifo<br clear="none"></div><div dir="ltr" id="yiv3416740753yui_3_16_0_1_1487917570933_11018"><br clear="none"></div><div id="yiv3416740753yui_3_16_0_1_1487917570933_10714"><br clear="none"></div></div></div></div><br clear="none"><br clear="none"></div> </div> </div> </div></div></div></div></div><br><br></div> </div> </div> </div></div></body></html>