Before revision: Trounce Pond, a retention basin landscaped with natural grassland plants, in Saskatoon, Saskatchewan, Canada The Corporate Park retention basin in Stafford, Texas, United States Retention basin in Pinnau, Schleswig-Holstein, Germany A retention basin, sometimes called a retention pond, wet detention basin, or storm water management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design.Water Environment Federation, Alexandria, VA; and American Society of Civil Engineers, Reston, VA. "Urban Runoff Quality Management."
After revision: 110px|A Retention pond guarded by concrete wall and surrounded by Taro plants in an Semi-urban indian TownTrounce Pond, a retention basin landscaped with natural grassland plants, in Saskatoon, Saskatchewan, Canada The Corporate Park retention basin in Stafford, Texas, United States Retention basin in Pinnau, Schleswig-Holstein, Germany A retention basin, sometimes called a retention pond, wet detention basin, or storm water management pond (SWMP), is an artificial pond with vegetation around the perimeter and a permanent pool of water in its design.Water Environment Federation, Alexandria, VA; and American Society of Civil Engineers, Reston, VA. "Urban Runoff Quality Management."