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Improved hydraulic performance for designed detention ponds and treatment wetlands may be achieved by the placement of island clusters near the inlet, according to a study using scaled physical models. The models...

Balderas Guzman, Celina, Samantha Cohen, Manoel Xavier, Tyler Swingle, Waishan Qiu, and Heidi Nepf. “Island topographies to reduce short-circuiting in stormwater detention ponds and treatment wetlands.” Ecological Engineering 117 (2018): 182-193. https://doi.org/10.1016/j.ecoleng.2018.02.020.

Stream daylighting can increase watershed-scale nitrogen retention. Nitrate travels on average 18 times farther downstream in buried streams than in open ones before being removed from the water column. Burial...

Beaulieu, Jake J., Heather E. Golden, Christopher D. Knightes, Paul M. Mayer, Sujay S. Kaushal, Michael J. Pennino, Clay P. Arango et al. (2015). Urban Stream Burial Increases Watershed-Scale Nitrate Export. PLOS ONE, 10(7), e0132256.

Improved water clarity is associated with increased numbers of recreational visits to lakes in Minnesota and Iowa. People were willing to travel 56 minutes farther for every one-meter increase in water clarity based...

Keeler, Bonnie L., Spencer A. Wood, Stephen Polasky, Catherine Kling, Christopher T. Filstrup, and John A. Downing. (2015). Recreational demand for clean water: evidence from geotagged photographs by visitors to lakes. Frontiers in Ecology and the Environment 13(2), 76-81.

A 2014 study found that tanks with floating wetlands populated with Iris pseudacorus removed 54 times more nitrogen and 10 times more phosphorus from the water than a control tank with no vegetation.

Keizer-Vlek, Hanneke E., Piet FM Verdonschot, Ralf CM Verdonschot, and Dorine Dekkers. (2014). The contribution of plant uptake to nutrient removal by floating treatment wetlands. Ecological Engineering, 73, 684-690.

Bioretention can reduce the temperature of thermally charged stormwater runoff from an asphalt surface. In a Blacksburg, Virgina study, the average thermal pollution reduction was nearly 37 MJ/m3, although the...

Long, Daniel L., and Randel L. Dymond. (2014). Thermal pollution mitigation in cold water stream watersheds using Bioretention. Journal of the American Water Resources Association, 50(4), 977-987.

A nine-year study determined that a bioinfiltration rain garden clearly removed the pollutant orthophosphate from stormwater. The median orthophosphate concentration decreased from 0.21-0.25 mg/L in the ponded water...

Komlos, John, and Robert G. Traver. (2012). “Long-Term Orthophosphate Removal in a Field-Scale Storm-Water Bioinfiltration Rain Garden.” J. Environ. Eng., 138(10), 991–998.

An experiment with 27 simulated wetlands in northern China demonstrated that constructed wetlands planted with macrophytes (large aquatic plants) remove more nutrients than unplanted wetland systems. Nutrient uptake...

Wu, Haiming, Jian Zhang, Peizhi Li, Jinyong Zhang, Huijun Xie, and Bo Zhang. (2011). Nutrient removal in constructed microcosm wetlands for treating polluted river water in northern China. Ecological Engineering, 37(4), 560-568.

Floating treatment wetlands improved removal of copper, fine suspended particles, and dissolved reactive P as compared to a control. Mats with artificial roots did not provide the same benefits as mats with living...

Tanner, Chris C., and Tom R. Headley. (2011). Components of floating emergent macrophyte treatment wetlands influencing removal of stormwater pollutants. Ecological Engineering, 37(3), 474-486.

Older, established green roof plant communities are more likely to absorb nutrients from rainfall and media than younger communities. Green roofs can act as either sources or sinks of nutrient runoff. Low to medium...

Collins, Kelly A., Timothy J. Lawrence, Emilie K. Stander, Robert J. Jontos, Sujay S. Kaushal, Tamara A. Newcomer, Nancy B. Grimm, and Marci L. Cole Ekberg. (2010). Opportunities and challenges for managing nitrogen in urban stormwater: A review and synthesis. Ecological Engineering, 36(11), 1507-1519.

Results from a multi-year study demonstrate that a constructed stormwater wetland is effective in removing phosphorus, nitrogen, total suspended solids, copper, and E. coli in stormwater runoff. The 0.4-ha wetland...

Wadzuk, Bridget M., Matthew Rea, Gregg Woodruff, Kelly Flynn, and Robert G. Traver. (2010). Water-quality performance of a constructed stormwater wetland for all flow conditions. Journal of the American Water Resources Association, 46(2), 385-394.

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