Two Lakes : Dreams Realized

Benefits That Will Result From The Flood Control Lakes Alone With No Additional Benefit From Reservoir Regulation.
Flood Benefits at 1979 Flow Rate
350 Year Probability

Position	1979 Actual	Flood Lake	Difference
1. Richland Flood Plain	272.9	273.3	+ 0.4
2. Lynch Creek	276.6	273.8	- 2.8
3. Town Creek	277.7	274.2	- 3.5
4. Island South End	281.0	275.0	- 6.0
5. Island North End	283.7	275.2	- 8.5
6. The Quarter	283.7	275.2	- 8.5
7. Twin Lake Subdivision	284.9	275.7	- 9.2
8. Canterbury Court SBV	285.8	276.0	- 9.8
9. Hanging Moss Creek	286.4	276.1	- 10.3
10. McLeod SBV	286.8	276.3	- 10.5
11. Canton Club SBV	287.1	276.5	- 10.6
12. Dam	288.4	277.0	- 11.4

At the present time it is very difficult to utilize the flood prevention capabilities of the Barnett Reservoir. Creation of flood control lakes below the reservoir will enable the reservoir to prerelease in advance of major storms without flooding homes and businesses in Jackson. This ability will enable the reservoir to reduce flooding downstream in Richland and Byram.

		Maximum Benefits That Can Be Derived By Subtracting An Additional 1.25 Feet That Will Result From Improved Regulation Of The Reservoir.
		Benefits derived from reservoir regulation will be discounted according to the consistency with which reservoir inflow can be predicted from rainfall as it is measured on the ground. This discount value will be applied to the chart below when a computer model for inflow projection has been completed.

Position	1979 Actual	Flood Lake	Difference
1. Richland Flood Plain	272.9	272.3	- 0.6
2. Lynch Creek	276.6	272.9	- 3.7
3. Town Creek	277.7	273.2	- 4.5
4. Island South End	281.0	274.2	- 6.8
5. Island North End	283.7	274.5	- 9.2
6. The Quarter	283.7	274.5	- 9.2
7. Twin Lake Subdivision	284.9	275.0	- 9.9
8. Canterbury Court SBV	285.8	275.3	- 10.5
9. Hanging Moss Creek	286.4	275.4	- 11.0
10. McLeod SBV	286.8	275.6	- 11.2
11. Canton Club SBV	287.1	275.8	- 11.3
12. Dam	288.4	276.3	- 12.1

Flood Control Benefit