1. SAFETY IS TVA’S NUMBER ONE PRIORITY
DURING ANY FLUCTUATION OF LAKE LEVELS
SIGNIFICANT FLUCTUATIONS IN THE LAKE LEVELS MAY BE EXPECTED DURING A PERIOD OF OBSERVATION AND EVALUATION PLANNED
AT THE END OF WALL CONSTRUCTION
THE OBSERVATION AND EVALUATION PERIOD WILL LAST FOR A MINIMUM OF ONE FULL CYCLE OF WINTER POOL LEVEL AND SUMMER POOL LEVEL
TENNESSEE VALLEY AUTHORITY
DIVISION OF LAND & RIVER MANAGEMENT
DAM SAFETY SECTION

2. RESERVOIR OBSERVATION AND EVALUATION
2021
2022
1390
PERIOD OF OBSERVATION AND EVALUATION
USUAL SUMMER POOL, APPROXIMATE ELEVATION 1382
1380
FLOOD OPERATING
GUIDE CURVE
BLUE-SHADED AREA SHOWS
POTENTIAL PERIOD AND
POTENTIAL RANGE
OF LAKE LEVELS
DURING RESERVOIR TESTING FOR
OBSERVATION AND EVALUATION
RESERVOIR POOL ELEVATION IN FEET
1370
USUAL WINTER POOL, APPROXIMATE ELEVATION 1362
1360
CURRENT POOL, APPROXIMATE ELEVATION RANGE
1350
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
EXPECTED COMPLETION OF CUTOFF WALL CONSTRUCTION
MAY 2021
TENNESSEE VALLEY AUTHORITY
DIVISION OF LAND & RIVER MANAGEMENT
DAM SAFETY SECTION

3. VIEW UPSTREAM AT POOL ELEVATION OF 1382
(SUPERPOSED ON SITE CONDITIONS PRESENT SUMMER 2018)
TOP OF UPSTREAM
STABILITY BERM
APPROX EL 1398
SLOPE
“APRON”
APPROX EL 1365
EL. 1382
TENNESSEE VALLEY AUTHORITY
DIVISION OF LAND & RIVER MANAGEMENT
DAM SAFETY SECTION

4. TENNESSEE VALLEY AUTHORITY
Crest Restoration
Cutoff Wall
Upstream Stability Berm
Downstream Stability Berm
2014 Sinkhole
1951 Grout Curtain
Slurry-Containment Grouting
Karst Limestone Foundation Rock
Deep Bedrock Grouting
Tailwater
TENNESSEE VALLEY AUTHORITY
DIVISION OF LAND & RIVER MANAGEMENT
DAM SAFETY SECTION