ever2.jpg (17831 bytes)

STA & Reservoir Performance Measures for the Everglades Restudy

Results for Alternative D13R

03/30/02

Site Index

 

This page summarizes water and mass-balance results for Alternative D and Calendar Years 1965-1995.   Comparisons with the 2050 Base Run are made where appropriate.

Figures & Discussion:

Tables:

Period of Record 65-95 65-95 79-88 79-88
BMP Performance 25% 51% 25% 51%
STA & Reservoir Mass Balances X X X X
STA & Reservoir Hydraulic Variables X X X X
Sensitivity Analysis - Settling Rate X X X X

STA Inflow, Outflow, & Bypass Flows, Alt-D13R, 1965-1995

qinout.gif (5838 bytes)

winout.gif (7612 bytes)

cincout.gif (8456 bytes)

These charts show inflow, outflow, and high-flow bypass flows, loads, and concentrations for the1965-1995 period.  Alternative D13R.

Residence Time Distributions, Alt-D13R

rtdfreq.gif (8085 bytes)
This chart compares the frequency distributions of mean hydraulic residence times under 1965-1995 hydrologic conditions.  HRT's are calculated  monthly as mean pool volume / mean outflow rate.  Frequency distributions are expressed as a percentages of the total outflow volume over the 1965-1995 period.   Frequency distributions are represented by the 5th, 50th, and 95th percentiles. 

HRT Cumulative Frequency Distributions

rtdfreq2.gif (15325 bytes)

These charts compare the cumulative frequency distributions of mean hydraulic residence times under 1965-1995 hydrologic conditions.   HRT's are calculated  monthly as mean pool volume / mean outflow rate.   Frequency distributions are expressed as a percentages of the total outflow volume over the 1965-1995 period.   An X,Y value represents the percent of total discharge volume (Y) with a residence time less than X days. 

STA-34 Inflow Time Series

st34qin.gif

st34res.gif

These charts show monthly inflows to STA-34.  The upper chart shows total inflows for 50Base (without storage reservoir) and Alternative D13R (with storage reservoir).  The lower chart shows the total STA-34 inflow and STA-34 inflows from the EAA reservoirs (WCS4N, WCS4S, EVBLS,EVBLN) for Alternative D13R.  Reservoir outflows tend to increase peak hydraulic loads to STA-34.

HRT Cumulative Frequency Distributions for STA-34

st34rtd.gif

This chart compares the cumulative frequency distributions of mean hydraulic residence times under 1965-1995 hydrologic conditions for STA-34.  HRT's are calculated as monthly mean pool volume/ mean outflow rate.   Frequency distributions are expressed as a percentages of the total outflow volume over the 1965-1995 period.   An X,Y value represents the percent of total discharge volume (Y) with a residence time less than X days.  Results for STA-34 without the EAA storage reservoir (50Base) and with the EAA storage reservoir (Alternative D13R) are compared.  HRT's in STA-34 are lower with the storage reservoir in place.

STA-34 Bypass

st34rtd.gif

This chart shows monthly STA-34 bypass volumes for 50Base and Alternative D13R.   No Bypass events are predicted for 50Base.   It is evident that with Alternative D13R bypass events occur more often than the 1/10 year frequency assumed in STA design.  

STA-2 Bypass

st34rtd.gif

This chart shows monthly STA-2 bypass volumes for 50Base and Alternative D13R.   It is evident that bypass events occur more often than the 1/10 year frequency assumed in STA design.  Although event frequencies are similar for the two alternatives, peak and total bypass flows are lower for ALT-D13R.   STA-2 bypasses will be discharged to Northwest WCA-2A in the same areas receiving outflows from the treatment system.

Top of Page

STA & Reservoir Performance Measures

http://www.shore.net/~wwwalker/restudy/altd.htm      Updated:  03/30/02