DMSTA Simulation Results Case: Poinsett Period: 01/01/74 to 12/31/90
Case: lake/reservoir; depths estimated; inflow P data sparse after 1990; 5-yr initialization period; depths lower & more variable than other DMSTA lake/reservoir datasets
Input Series poinsett Tanks in Series 2.0 Surface Area (km2) 17.5400
Simulation Period 10/01/68 thru 12/31/90 Mean Water Load  (cm/d) 11.5 Mean Depth (cm) 88
Output Period 01/01/74 thru 12/31/90 Max Water Load (cm/d) 77.4 Max Depth (cm) 268
Startup Interval (days) 3744 Iterations 1 Inflow Conc  (ppb) 101.6 Freq Depth <  5 cm 3.4%
Avg Interval (days) 30 Inflow P Load (mg/m2-yr) 3960 Load Reduction 24%
Parameter Set:   none Outflow FWM  Conc (ppb) 77.3 Time Freq Conc > 10 ppb 99%
K  (m/yr) 15.24 Sm (mg/m2)  0 Outflow C with Bypass 77.3 Vol Freq Conc > 10 ppb 100%
C1 (ppb) 22.0 Sp (mg/m2) 0 95th Percentile (ppb) 156.6 Storage Turnover (1/yr) 5.1
C0  (ppb) 4.0 Qout Intercept 1.0 Outflow Geo. Mean (ppb) 80.1 Mean Stored P (mg/m2) 3729
Zx  (cm) 60 Qout Exponent 2.0 Outflow GM,  Q>0 (ppb) 79.1 Storage Inc/Net Removal 1%
Wtr Bal Error 0.0% Knet-Plug Flow (m/yr) 11.6 Outfl. Seepage (cm/d/cm) 0
Mass B Error 0.0% Knet-NCSTR (m/yr) 12.4 Seepage Loss 0%
Calibration  Statistics for Period: 01/01/79 thru 12/31/90
Inflow P Conc (ppb)  = 98 Mean Mean
HLR (cm/d) = 11.0 Count Observed Predicted Residual Resid% RSE% R2
Mean Depth (cm) 146 92.3 87.1 5.2 6% 16% 90%
Flow (cm/day) 0 #N/A #N/A #N/A #N/A #N/A #N/A
Flow-Wtd-Mean Conc (ppb) 142 96.0 75.3 20.7 28%
Geometric Mean Conc (ppb) 142 77.8 76.5 1.3 2% 43% 0%
Mean Conc (ppb) 142 86.1 79.0 7.1 9% 55% 0%
Outflow Load (mg/m2-d) 0 #N/A #N/A #N/A #N/A #N/A #N/A
Pred Q x Conc (mg/m2-d) 143 10.83 8.43 2.40 28% 71% 79%
 
 
Obs Load2 = Predicted Flow x Obs Conc
Green lines on x axis of concentration plots indicate model calibration period.
10/29/03