The Suwannee River's height can change due to a number of factors, including:
Heavy rains in North Florida and South Georgia can cause floodwaters to travel down the river and into the Gulf of Mexico. Rainfall can also impact groundwater levels and surface water runoff.
Some stretches of the river are influenced by both upstream river flow and downstream sea level.
Increased water consumption in the basin could reduce river flow, which could lower the river stage and increase salinity. Changing water uses at commercial sites could also affect regional aquifer levels and spring flows.