Flood Notes

Every evening, Bia checked the ferry's microphone before she checked the weather. The river carried sound farther than the old radio, and the floating docks closed by rule when the floodplain's small frogs began their breeding calls. Bia's job was to keep the crossing open until the current reached the safe mark.

The new frog had first been separated from its relatives by its call, then confirmed by its shape and DNA. In Bia's time, a network of listening posts used the sound to update local boat routes. Her brother still trusted the river gauge more than the audio feed. He had taken the last ferry toward the clinic with a medicine cooler and expected Bia to meet him at the far dock.

The first call sounded from the flooded forest, one note lower than the network's usual threshold. The gauge showed another hour of safe passage. Bia could wait for a second call, or turn the ferry around and leave her brother on the opposite bank. She eased the throttle down. The channel speaker repeated the note from a post upstream, where no frog had been recorded before. The river route on her screen changed color.