Northeastern Section - 47th Annual Meeting (1820 March 2012)
Paper No. 48-10
Presentation Time: 8:00 AM-12:00 PM

COMPUTING THE HYDROLOGIC BUDGET FOR LAKE WAPALANNE

FLORES, Diana, Earth and Environmental Studies, Montclair State University, 1 Normal Avenue, Upper Montclair, NJ 07043, di.flores79@gmail.com, LUTEY, Amber, Lehigh University, 27 Memorial Drive West, Bethlehem, PA 18015, KELLY, Sara, California State University of Monterey Bay, 100 Campus Ctr Seaside, Seaside, CA 93955, JORDON, Jaime, University of California, Riverside, 900 University Ave, Riverside, 92521, OPHORI, Duke U., Department of Earth and Environmental Studies, Montclair State University, Upper Montclair, NJ 07043, GALSTER, Joshua C., Earth & Environmental Studies, Montclair State University, 1 Normal Ave, Mallory Hall, Montclair, NJ 07043, and BARRETT, Kirk, Earth and Environmental Studies, Montclair State University, 1 Normal Ave, Mallory Hall, Room 252, Upper Montclair, NJ 07043

Between July 13th and August 3rd 2011, a hydrologic budget for Lake Wapalanne, New Jersey, was calculated based on the equation, P ± G + Si – So – ET =ΔS. Precipitation, groundwater, stream inflow and outflow, evapotranspiration, and lake water storage were measured using direct and indirect methods. Seepage meters were installed to measure the groundwater inputs and outputs. The stream discharge and the lake depth converted from pressure sensors were used to find the stream inflow and outflow. A weather station measured precipitation and water loss (evapotranspiration). The water budget model (ΔS = P ± G + Si – So – ET) was used to calculate lake storage based on collected and calculated data. A survey of the perimeter of the lake provided lake storage data in addition to the water budget model. Results indicate that the average total precipitation and evapotranspiration were 0.44 cm/day and 0.4 cm/day respectively. Stream inflow and outflow discharges were 2474 m3/day and 4018 m3/day respectively, or, expressed as an equivalent depth over the lake's area of about 5.4 hectares, 4.6 cm/day and 7.4 cm/day. Groundwater discharge out of the lake was 0.6 cm/day. The calculated change in storage was -50,227m3 and the change in storage from the survey was 2,714 m3. The change in lake storage was minimal. Surface water inflow and outflow are the greatest contributors of lake water storage; however, it is believed that water inflow is underestimated in this analysis and is the source for the majority of the error in the hydrologic budget. These results and methods create a baseline water budget for future efforts to use and expand upon research on climate change by providing Lake Wapalanne as model of lake response to climate change.

Northeastern Section - 47th Annual Meeting (1820 March 2012)
General Information for this Meeting

Handouts:

Session No. 48--Booth# 10
Environmental Geoscience and Hydrogeology (Posters) II
Hartford Marriott Downtown: Ballrooms A, B & C and Ballroom Pre-function Area
8:00 AM-12:00 PM, Tuesday, 20 March 2012

Geological Society of America Abstracts with Programs, Vol. 44, No. 2, p. 110

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