Predictive Evapotranspiration Equations in Rain Gardens

Hess, Amanda; Wadzuk, Bridget; Welker, Andrea L.

doi:10.1061/(asce)ir.1943-4774.0001389

Cited by 20 publications

(20 citation statements)

References 19 publications

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“…As rain gardens usually accept runoff from surrounding areas, know quantities of simulated runoff were applied to each lysimeter during selected events over the spring, summer, and fall seasons. The simulated runoff was performed during rainfall events, and rates varied to mimic a 5:1 ratio of area contributing to the SCM surface ( Figure 2; for more information on quantity of inflow volume, see Hess et al, 2019).…”

Section: Methodsmentioning

confidence: 99%

“…Hess et al. (2019) compared rain garden lysimeter ET to uncalibrated (potential ET) and calibrated versions (considering plant health and soil moisture) of Hargreaves and the ASCE Penman–Monteith. To determine how well soil moisture predictions of ET perform compare with commonly accepted mathematical ET models, the same evaluation metrics used in Hess et al.…”

Section: Methodsmentioning

confidence: 99%

“…have been used to estimated ET in SCMs include the Hargreaves (Hargreaves & Allen, 2003) and American Society of Civil Engineers (ASCE) Penman-Monteith (Allen et al, 2005) equations (DiGiovanni et al, 2013;Hess, Wadzuk, & Welker, 2019). Hess et al (2019) found that these equations provided acceptable estimates of actual ET, especially if calibrated based on plant characteristics and water availability.…”

Section: Core Ideasmentioning

confidence: 99%

“…Mathematical relationships to convert potential ET to actual ET have been developed but often need site‐specific monitoring, such as weighing lysimeter data, for calibration (Allen et al., 1998). Climate‐based models that have been used to estimated ET in SCMs include the Hargreaves (Hargreaves & Allen, 2003) and American Society of Civil Engineers (ASCE) Penman–Monteith (Allen et al., 2005) equations (DiGiovanni et al., 2013; Hess, Wadzuk, & Welker, 2019). Hess et al.…”

Section: Introductionmentioning

confidence: 99%

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Evapotranspiration estimation in rain gardens using soil moisture sensors

Hess

Wadzuk

Welker

2021

Vadose Zone Journal

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Rain gardens are increasing in use as the shift from gray to green infrastructure continues. Water that enters a rain garden is removed by three mechanisms: overflow to an outlet, percolation to the underlying soil, and evapotranspiration (ET) to the atmosphere. Despite the importance of ET in aiding a rain garden to recover void space during the time between storm events, it is not often measured or calculated because it is so difficult to do so. This paper explores the use of soil moisture sensors to estimate ET, since they are relatively inexpensive to purchase and install. Three rain garden weighing lysimeters in Villanova, PA, were used for this study. Over a 3-yr study period daily ET was calculated each dry day and summed during the time in between storm events >25 mm. The cumulative changes of soil moisture readings during the interevent time at three depths were compared with the concurrent cumulative changes in the lysimeter weight readings. Cumulative soil moisture change was found to be strongly correlated to the cumulative ET for the different lysimeter media and drainage types. Using the two soil moisture sensors at the top and bottom of the soil column provided a similar result to using all soil moisture reading depths. The best single soil moisture reading depth was at the bottom of the lysimeter. The ET estimates via soil moisture tracking performed similar to uncalibrated potential ET estimates, but not as well as calibrated ET estimates.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Core Ideasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Evapotranspiration estimation in rain gardens using soil moisture sensors

Hess

Wadzuk

Welker

2021

Vadose Zone Journal

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“…The model performed appropriately for event up to 70 mm of rainfall and a return period of up to 10 years (Rezaei et al, 2019). Evapotranspiration (ET) by bioretention systems was modeled by Hess, Wadzuk, and Welker (2019) using both Hargreaves and ASCE Penman–Monteith models for calculating ET. The models were modified using observed ET data measured from three weighing lysimeters planted with black chokeberry, seaside goldenrod, and switch grass.…”

Section: Bioretentionmentioning

confidence: 99%

Urban stormwater characterization, control, and treatment

Rodak

Jayakaran

Moore

et al. 2020

Water Environment Research

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This review summarizes over 280 studies published in 2019 related to the characterization, control, and management of urban stormwater runoff. A summary of quantity and quality concerns is provided in the first section of the review, serving as the foundation for the following sections which focus on the control and treatment of stormwater runoff. Finally, the impact of stormwater control devices at the watershed scale is discussed. Each section provides a self-contained overview of the 2019 literature, common themes, and future work. Several themes emerged from the 2019 literature including exploration of substrate amendments for improved water quality effluent from stormwater controls, the continued study of the role of vegetation in green infrastructure practices, and a call to action for the development of new models which generate reliable, computationally efficient results under the physical, chemical, biological, and social complexity of stormwater management. © 2020 Water Environment Federation • Practitioner points • Over 280 studies were published in 2019 related to the characterization, control, and treatment of urban stormwater. • Studies on bioretention and general stormwater characteristics represented the two most common subtopics in 2019. • Trends in 2019 included novel substrate amendments, studies on the role of vegetation, and advancements in computational models.

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Bioretention

2022

Green Stormwater Infrastructure Fundamentals and Design

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Predictive Evapotranspiration Equations in Rain Gardens

Cited by 20 publications

References 19 publications

Evapotranspiration estimation in rain gardens using soil moisture sensors

Evapotranspiration estimation in rain gardens using soil moisture sensors

Urban stormwater characterization, control, and treatment

Bioretention

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