Errata for:
Hydrogeology and Ground-Water-Flow Simulation of the Cave Springs Area, Hixson, Tennessee

U.S. Geological Survey
Water-Resources Investigations Report 02-4091
by Connor J. Haugh

Note: The following items have been corrected in the online PDF version of the report. Underlining denotes text that was added.

Page 1 - Abstract, first paragraph: In 2000 1999, ground-water withdrawals by the Hixson Utility District averaged about 7.6 6.4 million gallons per day (Mgal/d) from two pumping centers.

Page 1 - Abstract, first paragraph: A second production well at Walkers Corner was approved for use in 2000 but is used infrequently. Hixson Utility District alternates the use of the two production wells at Walkers Corner except when drought conditions occur when they are used simultaneously.

Page 1 - Abstract, third paragraph: In 2000 1999, ground-water withdrawals of 7.6 6.4 Mgal/d [11.8 9.9 cubic feet per second (ft³/s)] equaled about 14 11 percent of the total simulated ground-water recharge. The remaining ground-water recharge discharges to rivers (46 48 percent, 40.4 41.1 ft³/s), springs (18 19 percent, 15.6 16.8 ft³/s), and Chickamauga Lake (22 percent, 19.0 ft³/s).

Page 14 - Ground-Water Withdrawals section, first paragraph: Production from the Cave Springs well field averaged about 9 ft³/s (5.8 Mgal/d) in 2000 1993.

Page 40 - Effects of Pumping at Walkers Corner section, second paragraph: The only difference between the initial calibration model simulation and this simulation is the addition of ground-water pumpage at Walkers Corner well field production well #1 and a reduction of pumpage at the Cave Springs well field from 9 to 7.1 ft³/s.

Page 40 - Effects of Pumping at Walkers Corner section, second paragraph: This is similar to the observed water-level decline of about 30 feet (figs. 13 and 14).
To isolate the effects of withdrawal at Walkers Corner well field production well #1 on the water budget, an additional pumpage simulation was run with the pumpage from the Cave Springs well field at the initial calibration simulation rate of 9 ft³/s. The model water budget indicates that ground-water withdrawal at the Walkers Corner well field from production well #1 results in decreases in simulated ground-water discharges of 0.9 ft3/s to Chickamauga Lake, 0.7 ft3/s to North Chickamauga Creek, 0.6 ft3/s to Lick Branch and Rogers Spring, 0.4 ft3/s to Poe Branch, and 0.2 ft3/s to Cave Springs (table 8).

Page 54 - Summary section, first paragraph: In 2000 1999, ground-water withdrawals by the HUD averaged about 7.6 6.4 Mgal/d from two pumping centers.

Page 55 - Summary section, sixth paragraph: The model water budget shows that in 2000 1999 ground-water withdrawals of 11.8 9.9 ft³/s (7.6 6.4 Mgal/d) equal about 14 11 percent of the total ground-water recharge with the remaining 86 89 percent of recharge discharging to North Chickamauga Creek and Cave Springs (56 58 percent, 48.6 50.4 ft³/s), Chickamauga Lake (22 percent, 19.0 ft³/s), Poe Branch (4 5 percent, 4.0 4.1 ft³/s), and Lick Branch and Rogers Spring (4 percent, 3.4 ft³/s)

Page 40 - Table 8: New column, Calibration simulation; pumping at Walkers Corner well field, was added.

Table 8. Simulated ground-water discharges and withdrawals for steady-state model simulation

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