Central Florida Ridges and Uplands

A suspected cyanobacteria bloom was reported on the Withlacoochee River on June 29 — a citizen sighting of bright green water stretching more than a football field in extent. These bacterial mats thrive in slow, sun-heated water, and the warning comes not just from the color, but from what happens next. As a dense bloom dies back, dissolved oxygen can crash, and the cyanotoxins these bacteria produce can sicken fish, wildlife, and people who wade or swim without recognizing the danger.Flow readings on the Weeki Wachee River near Brooksville show 108 cubic feet per second — water is moving through the system, but velocity alone won't clear conditions already established in the river. Until conditions improve, the safest approach is to avoid visibly green or scummy stretches and report any similar discoloration you see.

Dusky Herpetogramma moths are at peak abundance this July, with 20 sightings recorded — more than any other species in a recent 100-plus moth flush across the scrub ridges. The timing is no coincidence: these nocturnal insects emerge in response to the humidity and moisture of the rainy season, their life cycles finely tuned to the atmospheric conditions that govern the region's hydrology.These sandy uplands play a quiet but critical role in the landscape's water budget. Rainfall here infiltrates directly into the karst aquifer below, eventually feeding the springs downstream. That connectivity means the ecological health of the scrub — its vegetation structure, its insect communities, the very permeability of its soil — is bound to the water quality and flow reaching the impaired springs below. When moths like these thrive in the uplands, it suggests the groundwater system is still functioning, at least in this reach, even as downstream water systems struggle.