A research conducted by the year 2009 reported for tile existence qf high pollutant luatlinJ~-" on tlu: urban ru1u:~lf (fron. Bahir Dar town) jl)ini'lg to the nearby waler systems. In order to avoid the negative effects of these pollutant loadings, however. there are (J number of treatment options, among. whid: bioretention system U one fulling under Best A.fanaKement l'ractices. Potentially suitable site selection for the estabhshmen: of bioretention ·~l'·'wms being the main ohjecfive. data 011 nine major fnctor considerations "ere collected using GPS a1UI .derived/rom secondary data including Topographic Map. Landsat ETM+ and SRTM imageries. 1'Jre 'f;l(:lors included distance frotn developed are.as and churchc» er· mosques, distance from major streams aru! roods. distance frmn wetlands and Tana Lakeshore. slope. elevation and Ian(! us.e types ... 411 the far.tor considerations were analyzed for their area categorization under the three suitability classes, for u.•hich h1glt sunability class ti~a.\' represented with three, medium suitobilit» with two and least suitability with une. Co/1Jr cutegorization. by which Red represeming least suitability, Green representing medium • suitability and }~e!lvt~ representing higl~ .suitalii/i11·, 1vas used in order to show :lie clear rut boundary between each suituhff;~.,. cluss 011 the maps. Art;,(;),<; 9.3 played crucial role· in the 11t•lt11/;? \'Ut!nl>i.lil>' anulvsi» of the factor considerations. /Je.for<f the final suuabtlitv mode! duvelopment, however, 1t:r.1,v,h1 u·a\' com:>ule1J for each factor using pnirwise rnmparison. lhese computed h'{!l>{h!s l~·crc· ruult1j1/•et! u·1tl: lite 1~1.;u;J' rett values 1~{ each .. fi1ctarJ in the raster calculator It> Ki~·,~ the .Ju1.r! suitahilil)• model. Ajler the .fintt! n10,n prt!fJc:r1111011 aiyoru t .rs 17 ht1 was found suitable for 1J:t .. mtended purpose. Sui!able areas located . .ft.,.'!f'J1'..'inJ~ .'1 bav route tt'f~,..e ranked as hi,~hly . ..;1:i1dh!e lo treat the nrban r..111oj·j frn'ln Bahir Dar !tJH'U. Finally, it 1i·as cone iuded that there iJ l;igli pott,liiinl to 11?ar.axe the existing nrbun runoffpoltution along -.\·iti: rvcononendarions fr» the concerned bodies fu start acting ond uxc the! available potential Ji"J hrfn,!! the existing urban r14r.off·t\·(llf:T polfu!iOl'f in to control. Further, if IV(l.'i also recommended fur ground 't1'G/c.•1 assessment to ffl· undertaken so tha: the' ejlicic~tU.)' oJ' the system can be ensured.