Research Article

Modeling and Assessing Surface Water Potential Using Combined SWAT Model and Spatial Proximity Regionalization Technique for Ungauged Subwatershed of Jewuha Watershed, Awash Basin, Ethiopia

Table 7

Average monthly water balance values of the watershed.

MonthRain (mm)SURF Q (mm)LAT Q (mm)Water yield (mm)ET (mm)PET (mm)

January36.227.676.2430.556.6332.85
February50.7911.169.135.128.5632.45
March88.2317.0414.2151.9219.5340.1
April95.0918.4317.463.9228.3541.19
May62.2511.439.4651.1635.4148.99
June31.311.763.9125.9428.1940.21
July200.4339.731.2889.723.4532.30
August314.2393.8653.63205.7423.0932.51
September123.3424.528.96140.1321.1138.11
October39.135.429.7287.6411.4441.9
November32.925.725.6354.17.9839.07
December26.624.025.9636.476.5633.6

SURF Q is the surface runoff, LAT Q is the later flow in the watershed, ET is evapotranspiration, and PET is potential evapotranspiration.