DMSTA Simulation Results Case: Istokpoga Period: 01/01/88 to 09/30/00
Case: lake/reservoir; sav/hydrilla dominated; data from walker & havens, 2003; 5 yr initialization
Input Series istok_tp Tanks in Series 2.0 Surface Area (km2) 110.0000
Simulation Period 01/01/83 thru 09/30/00 Mean Water Load  (cm/d) 1.2 Mean Depth (cm) 170
Output Period 01/01/88 thru 09/30/00 Max Water Load (cm/d) 11.5 Max Depth (cm) 250
Startup Interval (days) 3653 Iterations 1 Inflow Conc  (ppb) 104.3 Freq Depth <  5 cm 0.0%
Avg Interval (days) 90 Inflow P Load (mg/m2-yr) 351 Load Reduction 58%
Parameter Set:   none Outflow FWM  Conc (ppb) 47.6 Time Freq Conc > 10 ppb 64%
K  (m/yr) 3.36 Sm (mg/m2)  0 Outflow C with Bypass 47.6 Vol Freq Conc > 10 ppb 100%
C1 (ppb) 22.0 Sp (mg/m2) 0 95th Percentile (ppb) 53.8 Storage Turnover (1/yr) 0.8
C0  (ppb) 4.0 Qout Intercept 0.2 Outflow Geo. Mean (ppb) 42.9 Mean Stored P (mg/m2) 2624
Zx  (cm) 60 Qout Exponent 1.0 Outflow GM,  Q>0 (ppb) 44.1 Storage Inc/Net Removal 25%
Wtr Bal Error 0.0% Knet-Plug Flow (m/yr) 2.7 Outfl. Seepage (cm/d/cm) 0
Mass B Error 0.1% Knet-NCSTR (m/yr) 3.4 Seepage Loss 0%
Calibration  Statistics for Period: 01/01/93 thru 09/30/00
Inflow P Conc (ppb)  = 105 Mean Mean
HLR (cm/d) = 0.9 Count Observed Predicted Residual Resid% RSE% R2
Mean Depth (cm) 31 167.5 170.2 -2.7 -2% 8% 2%
Flow (cm/day) 31 0.88 0.86 0.02 2% 30% 91%
Flow-Wtd-Mean Conc (ppb) 28 54.4 49.8 4.6 9%
Geometric Mean Conc (ppb) 28 44.6 45.0 -0.5 -1% 34% 27%
Mean Conc (ppb) 28 49.0 45.3 3.6 8% 38% 24%
Outflow Load (mg/m2-d) 31 0.48 0.43 0.05 12% 47% 88%
Pred Q x Conc (mg/m2-d) 30 0.50 0.44 0.06 13% 55% 86%
 
 
Obs Load2 = Predicted Flow x Obs Conc
Green lines on x axis of concentration plots indicate model calibration period.
10/29/03