detention pond advantages and disadvantages

Putrification. The lower stages of an extended detention basin can detain runoff from the stormwater quality design storm for extended periods of time, thereby promoting pollutant removal through sedimentation. oKz~[_Zn[U/_Z x2}[[oJ.O_[/k^m~|5J~[\%{Z NCh{!@8]{p.9x^AA* yU2)GbD_.GZ d[GO[tZWv/uK^iMn ^4tM4_i_ B[T[oa0k*ov{k}GIW ePRw4aW/L&i rkUd $_L}~NTA~u]oN2 Stormwater becomes polluted because it flows throughout cities and landscapes collecting pollutants, which it then carries into other waterways. Poorly designed retention ponds can actually decrease the quality of the water they collect. The lowest unit cost represents approx. The stored water will change the water level, and ponds should be designed to function in both dry and wet weather. These cookies will be stored in your browser only with your consent. 11 0 obj Retention ponds are simple if space is provided. Water Conservation Technologies - University of Idaho Let us take a closer look at the differences between detention ponds and retention ponds, about their purpose, effectiveness in controlling flood water, construction, and maintenance costs. 4 0 obj w(:S|yESI.{Ix6v6Y$gdu8YMv_/J _c`hTEg.UFw>dO~':l N\gn5T {-$fy6EUG&sZNa] JIIQn%vV,g"aQk:6lUS(t|z3?v),7Q:8x3Rs?rav[saNmcR;]yx9n !7~TPe]5 Stormwater runoff becomes contaminated when its not properly managed. Detention Ponds are more common in the West. Perennial plants should be grown around the pond to act as a buffer. Detention ponds can pose many safety hazards. Advantages and Disadvantages. Contact Construction should be done so that ground water does not seep out into the dry pond. Advantages Disadvantages; Wet Retention Pond: Wet basin or pond maintains a permanent pool of water, in addition to temporarily detaining stormwater Applicable to all site sizes, depending on available space Can achieve high removal rate of pollutants Most cost effective for larger, intensively developed sites. infiltration and/or storage) High void ratios (up to 96%) providing high storage volume capacity. 21 0 obj Retention vs. Detention: What's up with your Ponds? Maintaining these ponds can cost 7-8 percent of the construction cost annually, which is actually slightly higher than that of retention ponds. BX vU&Rlr"`G [ QobPMq"#%%>%Xl,MY,6gr_&MQ9Hl_S$3;p^U WggLgSn.^z8?|/v^8J^@u6^]T^:dj}'*IvRt}=m W2Zs.@$~dFE)RH-M l{ endobj However, retention ponds never completely drain or dry. Detention basins are normally dry and in certain situations the land may also function as a recreational facility. The advantages of detention basins include the cost. Improved stormwater collection and flood control. To prevent overflowing, they also have a small outlet for water to go out safely. Learn How! Runoff from each rain event is detained and treated in the pond until it is displaced by runoff from the next storm. The construction of a basin is a popular form of stormwater management. If you want to avoid having an overgrown and run-down detention pond that attracts dangerous predators and mosquitos, TRUEGRID permeable pavers are the answer. They are usually built for large areas of land and are not suitable for small individual homes. Retentionponds can provide both stormwater attenuation and treatment. Teach Your Kids to Recycle, Reuse, and Reduce With These Tips, Creative Ways to Repurpose Your Everyday Plastic Bottles, Reasons Why California is Going Through the Worst Drought in History, Save Money And Save The Planet At The Same Time, Are You Recycling Right?