DMSTA Simulation Results Case: Istokpoga_CL Period: 01/01/88 to 09/30/00
Case: Lake Istokpoga; inflow concentrations before 1993 estimated by regression vs. flow & season; directly measured after 1992
Input Series istok_cl Tanks in Series 2.0 Surface Area (km2) 110.0000
Simulation Period 01/01/88 thru 09/30/00 Mean Water Load  (cm/d) 1.2 Bypass Volume 0.0%
Output Period 01/01/88 thru 09/30/00 Max Water Load (cm/d) 11.5 Mean Depth (cm) 166
Startup Interval (days) 1827 Iterations 1 Inflow Conc  (ppb) 14.4 Max Depth (cm) 195
Avg Interval (days) 90 Inflow P Load (mg/m2-yr) 46 Freq Depth <  5 cm 0.0%
Parameter Set:   EMERG Outflow FWM  Conc (ppb) 17.4 Load Reduction -14%
K  (m/yr) 0.00 Sm (mg/m2)  0 Outflow C with Bypass 17.4 Time Freq Conc > 10 ppb 56%
C1 (ppb) 22.0 Sp (mg/m2) 0 95th Percentile (ppb) 29.8 Vol Freq Conc > 10 ppb 100%
C0  (ppb) 4.0 Qout Intercept 0.0 Outflow Geo. Mean (ppb) 18.1 Storage Turnover (1/yr) 0.0
Zx  (cm) 60 Qout Exponent 0.0 Outflow GM,  Q>0 (ppb) 17.6 Mean Stored P (mg/m2) 2000
Wtr Bal Error 0.0% Knet-Plug Flow (m/yr) -0.2 Storage Inc/Net Removal 0%
Mass B Error -0.4% Knet-NCSTR (m/yr) -0.2 Outfl. Seepage (cm/d/cm) 0
Calibration  Statistics for Period: 01/01/93 thru 09/30/00 Mean Mean
Count Observed Predicted Residual Resid% RSE% R2
Mean Depth (cm) 31 167.5 166.5 1.0 1% 1% 98%
Flow (cm/day) 31 0.88 0.87 0.01 2% 22% 95%
Flow-Wtd-Mean Conc (ppb) 30 17.4 15.1 2.3 15%
Geometric Mean Conc (ppb) 30 16.9 15.9 1.0 6% 18% 5%
Mean Conc (ppb) 30 17.1 16.0 1.1 7% 21% 5%
Outflow Load (mg/m2-d) 31 0.14 0.13 0.01 5% 26% 91%
Pred Q x Conc (mg/m2-d) 30 0.16 0.13 0.02 15% 28% 90%
 
 
Obs Load2 = Predicted Flow x Obs Conc
Green lines on x axis of concentration plots indicate model calibration period.
07/09/02