Runoff Module 3 Date: 2010/08/26 File Name: ... C:\WRSM2000\CALEDON\D21_B\D21RU3.DAT Runoff Module number: 3 Runoff Module name: D21C Catchment area: 212.00 km² The module uses the Sami groundwater model. Aquifer thickness (m).................: 1.00 Storativity...........................: 0.0010 Initial aquifer storage (mm)..........: 0.50 Static water level (mm)...............: 0.05 Unsaturated Storage Capacity (mm).....: 2.10 Initial Unsaturated storage (mm)......: 0.85 Perculation Power (Mm³)................: 0.200 Maximum Discharge Rate (mm)...........: 2.00 Power of the SW/GW Interaction curve..: -0.05 Maximum Hydrological gradient.........: 0.00100000 Transmissivity (m²/day)...............: 10.00 Borehole distance to the river (m)....: 1000.00 Groundwater evaporation area (km²)....: 2.12 Parameter K2..........................: 0.10 Parameter K3..........................: -3.00 Interflow lag.........................: 0.00 Number of months to average recharge...: 1 The module does NOT make groundwater abstractions. Mean Annual Precipitation: 883 mm Rainfile: ... C:\WRSM2000\CALEDON\D21_B\Caled1.ran Calibration Parameters: Power of soil moisture/Subsurface flow eqn........(POW): 3.00 Power in the soil moisture recharge equation.....(GPOW): 3.00 No recharge occurs below a storage of ...........(HGSL): 20.00 Soil moisture capacity in mm.......................(ST): 110.00 Subsurface flow at full soil moisture capacity.....(FT): 16.00 Maximum soil moisture recharge...................(HGGW): 2.00 Min. catchment absorption rate in mm/month...... (ZMIN): 999.00 Max. catchment absorption rate in mm/month.......(ZMAX): 999.00 Interception storage in mm.........................(PI): 1.50 Forest Factor (Van der Zel only)...................(FF): 1.00 Lag of flow (excluding groundwater)................(TL): 0.25 Coefficient in evaporation / soil moisture equation.(R): 0.50 Evaporation and pan factors. Oct 149 0.800 0.630 Nov 161 1.000 0.800 Dec 185 1.000 0.810 Jan 175 1.000 0.800 Feb 136 1.000 0.780 Mar 118 1.000 0.770 Apr 82 1.000 0.720 May 64 1.000 0.680 Jun 48 1.000 0.610 Jul 56 0.800 0.520 Aug 83 0.800 0.580 Sep 119 0.800 0.620 The Runoff Module has no afforestation. The Runoff Module has no alien vegetation areas. The Runoff Module has no paved areas. The Module has no inflow route. The Runoff Module has 1 outflow routes: Route 11 carries 100.0 % of the total runoff. The Runoff Module has no groundwater abstraction data.