Determination of evapotranspiration in SCM's using a weighing lysimeter An experimental approach

Current stormwater control measures (SCMs) often require significant land area in order to achieve the SCM goals of reduced peak outflows and water quality enhancement. Land area requirements can be reduced through more efficient technology gained by further understanding the water budgets associate...

Full description

Authors: Robert Traver, Bridget M. Wadzuk, John Hickman, Dominik Schneider
Conference Location: Providence, RI
Conference Dates: May 16 - May 20, 2010
Proceedings Title: World Environmental and Water Resources Congress 2010 - Challenges of Change
Format: Conference Proceeding
Subjects:
Online Access: Full Text
Summary: Current stormwater control measures (SCMs) often require significant land area in order to achieve the SCM goals of reduced peak outflows and water quality enhancement. Land area requirements can be reduced through more efficient technology gained by further understanding the water budgets associated with SCMs. For instance, evapotranspiration (ET) is a little understood portion of any SCM water budget, but may yield substantial volume reduction in a SCM when viewed from a longer term perspective. Research is currently being conducted at Villanova University to determine the ET occurring in a bioinfiltration basin, stormwater wetland, and green roof. This paper delineates the experimental setup to quantify ET in various SCMs. The experimental setup uses a weighing lysimeter, where the inflow, outflow, and infiltration are measured to determine the ET in three different SCMs. Additionally, preliminary experimental results are compared to potential ET as calculated by the Penman and Penman-Monteith equations.
DOI: 10.1061/41114(371)406