In the urban watershed, average volumetric storm flow concentrations increase with longer antecedent dry period that allows build-up of PAHs on watershed surfaces.
Access paths have the lowest Ks values of all watershed surfaces, but conveyance efficiency of HOF generated on these surfaces is low.
The 'Lum' is a dimensional parameter which reveals the characteristics and size of a stream segment components and its contributing watershed surfaces (Strahler 1964) and acquired by dividing the total stream length of an order by total number of stream segments in the subsequent order.
In highly anthropized watersheds, surface water tributaries may carry unexpected high quantities of radon and radium to coastal lagoons.
In any watershed, the surface and subsurface runoff are functions of physical, biological as well as anthropogenic contributory factors (Merz et al. 2006; Ghimire et al. 2014).
Nine percent of the watershed's surface runoff is collected from rain, 35 percent from rain on snow, and 56 percent from snow.
In this kebele's Shafa micro-watershed, the surface flow resulting from few days' rainfall overtopped and significantly damaged the structures due to poor design and management.
Selective erosion and transport of silt and clay particles from watershed soil surfaces leads to enrichment of suspended sediments by size fractions that are the most effective scavengers of chemical pollutants.
