Myakka wetlands reduce downstream flooding

Myakka wetlands reduce downstream flooding

Park closed

Myakka River State Park is experiencing historic flood levels, with high water levels expected in the park for a while. The park is closed to the public until further notice. For updates, visit FloridaStateParks.org.

A watershed is an area of land that channels rainfall into a common body of water. Myakka River State Park lies within the Myakka River Watershed, which encompasses approximately 600 square miles. Within this watershed, the Myakka River collects water from numerous creeks and sloughs. It provides drainage by channeling water into Charlotte Bay to the south, where it flows into the Gulf of Mexico.

Four major depressions act as natural water detention areas in the Myakka River Watershed. These include Flatford Swamp near Myakka City, Tatum Sawgrass Marsh just north of the park, and Upper and Lower Myakka Lake within the park. Tutum Sawgrass Marsh, the largest of these detention areas, has the capacity to store an equivalent of 1.8 inches of rainfall, which is four times that of Upper and Lower Myakka Lakes combined. And in numerous smaller wetlands, water covers the soil periodically.

During rain storms, the amount of water running over land in a watershed increases, and in severe storms, flooding may result. The low-lying areas of land where water periodically spreads when a river or creek overflows its banks are known as floodplains. Flooding in floodplains is an expected and important natural process. Indeed, as a rain-fed river, during our rainy season the Myakka River routinely overflows into the park's floodplain marshes, other wetlands and hydric hammocks. As Myakka's ecosystems have adapted to this natural ebb and flow of water, it's critical for their health. Therefore, restoring impacted wetlands and maintaining their health is a priority for Myakka's team.