An examination of extreme floods, effects on land-use change and seasonality in the lower St. Johns River Basin, Florida using HSPF and statistical methods

As population growth and urbanization are steadily rising, the need for dependable flood estimation techniques is crucial. This study evaluates extreme events in select sub-basins of Lower St. Johns River Florida, USA. The considers effect on natural hydrologic processes magnitudes watershed. Additionally, effects varying seasonality into modeling procedure also investigated. research focuses determining 10-, 25-, 50-, 100-year return frequency flows Julington Creek, Ortega River, Pablo Creek Basin major findings this indicate that by implementing a range methods one can better describe inherent uncertainty with traditional estimates. Also, showed does not result vast differences resulting However, various land-use scenarios may produce simulated greater magnitude—especially when more urbanized scenario modeled.