River Reversal (Jacksonville, FL)
Did you know that the north-flowing St. Johns River reverses its flow twice per day? The reversal is caused by the Atlantic Ocean’s incoming tide, and when there are strong, sustained northeasterly winds, the flow can stay reversed for many days. This flow reversal, combined with the slow-moving nature of the St. Johns, means that it can be difficult for the river to flush pollutants out.
Viewer Tip: When rain water enters a storm drain, it is transported directly to local streams and the St. Johns through pipes, carrying alongtrash and pollutants picked up during the journey. It is important to remember that dumping yard clippings, trash, oil, and other wastes outside or in a storm drain can directly impact our surface and groundwater supplies. Litter and yard wastes can also clog storm drains, making them less effective at handling rain water. Lend a hand by making sure to properly dispose of your wastes – either in a trash can, or for chemicals,at a household hazardous waste collection site. Visit www.cleanup.org/ or call 1-800-CLEANUP to find one in your area.
Seasons: Spring, Summer, Fall, Winter
(Sources: Lower St. Johns River Basin. The St. Johns: It’s Your River. “Water Quality.” http://floridaswater.com/LSJRB/water_quality.htmland “Minimize Harm from Stormwater Runoff.” http://floridaswater.com/LSJRB/help_minimize.html)