Plot and small-watershed scale runoff from two reclaimed surface-mined watersheds in Alberta

✍ Scribed by T. E Harms; D. S Chanasyk

• Book ID: 102658991
• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 928 KB
• Volume: 14
• Category: Article
• ISSN: 0885-6087
• DOI: 10.1002/(sici)1099-1085(200005)14:7<1327::aid-hyp63>3.0.co;2-7

✦ Synopsis

In_ltration excess overland ~ow has been identi_ed as the dominant ~ow pathway in recently reclaimed surface mined watersheds as a result of compaction and sorting during the reclamation procedure[ Therefore\ there could be a fairly direct relationship between runo} generated from the hillslopes to that measured at the watershed outlet[ A 2!year study was initiated in 0882 to determine how well surface runo} at a watershed scale could be predicted from 0!m 1 runo} frames placed on hillslopes in two reclaimed surface!mined watersheds in central Alberta[ Runo} from the hillslope frames suggests outlet discharge should be high from the 2=3!ha Sandy Subsoil Watershed and much less for the 8=7!ha West Watershed\ but the opposite occurred[ Most of the hillslope runo} from the Sandy Subsoil Watershed in_ltrated once it reached the channel and depression storage played an insigni_cant role in determining runo}[ In contrast\ most of the runo} from the West Watershed originated from rain falling directly on the saturated channel "depression storage# or near!channel saturated areas\ rather than the hillslopes[ Neither watershed runo} magnitude nor timing could be predicted from the same parameters for hillslope runo} frames for either reclaimed watershed[