DMSTA Simulation Results Case: Sawgrass Period: 01/01/80 to 09/30/99
Case: lake/reservoir; depths estimated; gap in inflow conc time series 1985-1990; high water load; short hrt ~ 1.5 days; 5-yr initialization;p simulation insensitive to calibration
Input Series sawgrass Tanks in Series 2.0 Surface Area (km2) 1.9500
Simulation Period 12/01/74 thru 09/30/99 Mean Water Load  (cm/d) 81.6 Mean Depth (cm) 130
Output Period 01/01/80 thru 09/30/99 Max Water Load (cm/d) 646.1 Max Depth (cm) 420
Startup Interval (days) 7761 Iterations 1 Inflow Conc  (ppb) 107.1 Freq Depth <  5 cm 0.0%
Avg Interval (days) 30 Inflow P Load (mg/m2-yr) 45493 Load Reduction 1%
Parameter Set:   none Outflow FWM  Conc (ppb) 106.4 Time Freq Conc > 10 ppb 99%
K  (m/yr) 0.49 Sm (mg/m2)  0 Outflow C with Bypass 106.4 Vol Freq Conc > 10 ppb 100%
C1 (ppb) 22.0 Sp (mg/m2) 0 95th Percentile (ppb) 185.7 Storage Turnover (1/yr) 0.2
C0  (ppb) 4.0 Qout Intercept 3.0 Outflow Geo. Mean (ppb) 84.6 Mean Stored P (mg/m2) 3983
Zx  (cm) 60 Qout Exponent 1.0 Outflow GM,  Q>0 (ppb) 84.6 Storage Inc/Net Removal 87%
Wtr Bal Error 0.0% Knet-Plug Flow (m/yr) 2.4 Outfl. Seepage (cm/d/cm) 0
Mass B Error -0.1% Knet-NCSTR (m/yr) 2.4 Seepage Loss 0%
Calibration  Statistics for Period: 03/01/96 thru 09/30/99
Inflow P Conc (ppb)  = 139 Mean Mean
HLR (cm/d) = 89.9 Count Observed Predicted Residual Resid% RSE% R2
Mean Depth (cm) 44 153.8 132.7 21.1 16% 20% 38%
Flow (cm/day) 0 #N/A #N/A #N/A #N/A #N/A #N/A
Flow-Wtd-Mean Conc (ppb) 44 121.6 136.8 -15.2 -11%
Geometric Mean Conc (ppb) 44 122.5 141.3 -18.7 -13% 24% 77%
Mean Conc (ppb) 44 142.2 159.0 -16.9 -11% 26% 72%
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) 44 109.26 122.92 -13.65 -11% 29% 91%
 
 
Obs Load2 = Predicted Flow x Obs Conc
Green lines on x axis of concentration plots indicate model calibration period.
10/29/03