ANNUAL WATER BUDGETS FOR A FORESTED SINKHOLE WETLAND
Journal Article
·
· Wetlands
OSTI ID:1059315
- University of Southern Indiana
- ORNL
Annual water budgets spanning two years, 2004 and 2005, are constructed for a sinkhole wetland in the Tennessee Highland Rim following conversion of 13 % of its watershed to impervious surfaces. The effect of watershed development on the hydrology of the study wetland was significant. Surface runoff was the dominant input, with a contribution of 61.4 % of the total. An average of 18.9 % of gross precipitation was intercepted by the canopy and evaporated. Seepage from the surface water body to the local groundwater system accounted for 83.1 % of the total outflow. Deep recharge varied from 43.2 % (2004) to 12.1 % (2005) of total outflow. Overall, evapotranspiration accounted for 72.4 % of the total losses, with an average of 65.7 % lost from soil profile storage. The annual water budgets indicate that deep recharge is a significant hydrologic function performed by isolated sinkhole wetlands, or karst pans, on the Tennessee Highland Rim. Continued hydrologic monitoring of sinkhole wetlands are needed to evaluate hydrologic function and response to anthropogenic impacts. The regression technique developed to estimate surface runoff entering the wetland is shown to provide reasonable annual runoff estimates, but further testing is needed.
- Research Organization:
- Oak Ridge National Laboratory (ORNL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1059315
- Journal Information:
- Wetlands, Journal Name: Wetlands Journal Issue: 5 Vol. 32
- Country of Publication:
- United States
- Language:
- English
Similar Records
Geohydrology of karst terrain, Lost River Watershed southern Indiana. Report of investigation No. 7
Using dye tracing to establish groundwater flow paths in a limestone marble aquifer, University of California, Santa Cruz, California
An update on the SRP burial ground area water balance and hydrology
Technical Report
·
Sun Nov 30 23:00:00 EST 1975
·
OSTI ID:6951713
Using dye tracing to establish groundwater flow paths in a limestone marble aquifer, University of California, Santa Cruz, California
Conference
·
Wed Mar 31 23:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5055473
An update on the SRP burial ground area water balance and hydrology
Technical Report
·
Wed Jan 08 23:00:00 EST 1986
·
OSTI ID:501528