Historical Flood Heights sign on tree 🌊

Alafia River Flooding Sign

● Orange Trail
πŸ—ΊοΈ
TrailOrange Trail
πŸ“
TypeEducational Exhibit
🌊
FeatureRiver Flooding History
🎨
Created byAmanda Seeley, Trail Artisan

About This Exhibit

The Alafia River is prone to flooding like any other river. Hillsborough County has maintained river water level readings daily since 1933! The USGS National Water Dashboard shows these daily heights as well as other water measurements such as temperature and rate of flow.

This exhibit shows the top 3 water level heights recorded on the river since 1933. The top of the blue line illustrates the water level. Interestingly, the last several major floods have all occurred roughly 28 years apart.

Those who have lived in River Hills for a while will remember the flood of September 2017, which flooded many homes across Lithia-Pinecrest. One of the photos below shows 2020 Trail Leader Sean Troyer standing on top of this bench.

Photos

Installing the Sign

Volunteers measuring height for flood sign installation
Volunteers working up in the trees to install the sign
Volunteer leveling the flood height signs on the tree
Completed flood sign showing Sept 2017 22.49ft, Sept 1988 21.48ft, Sept 1960 20.92ft
22.49'
Sept. 2017
21.48'
Sept. 1988
20.92'
Sept. 1960
Historical flood heights recorded on the Alafia River since 1933. Note how all three major floods occurred roughly 28 years apart.

The Trail During a Flood Event

Trail completely flooded β€” bench barely visible above the water
Volunteer crew posing in front of the completed Historical Flood Heights sign
Volunteer standing in flood water doing trail work

When the river gauge reaches +6.0 ft, sections of the trail flood like this. TRAIL FLOODED signs are posted at all entrances when this occurs.

This exhibit and all the amenities of the trail system are maintained by volunteers. Students can receive Bright Futures Service hours for helping. Follow trail events and contact the trail leaders at the Trails of River Hills Facebook page. Special thanks to Trail Artisan Amanda Seeley for creating these signs.

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