Annual runoff increases from thinning in Salt-Verde watersheds.

a ‘Scenario Name’ indicates number of years simulated in each scenario (15, 25, 35 years) and extent of forest thinned (low = 30% of forest thinned; mid = 45%; high = 60%). ‘Total Hectares’ are total number of hectares thinned in each scenario. ‘Hectares per Year’ are number of hectares thinned every year for 10 consecutive years (15-year scenarios), 20 consecutive years (25-year scenarios), and 30 consecutive years (35-year scenarios). ‘Effective Hectares per Year’ are the average number of thinned hectares across all years of the scenario that contribute to additional runoff (see figure 6). Estimates of additional runoff associated with thinning of ponderosa pine forests across Salt-Verde watersheds accounting for variation in treatment periods, total forest extent treated, and drought and pluvial periods of winter precipitation (Oct-Apr). Estimates rounded off to three significant digits. Annual runoff increases from thinning in Salt-Verde watersheds.