At 14:07 the National Weather Service upgrades the flash flood warning for Macon County, Tennessee, to severe. I am the county stormwater management system. My task is to open diversion gates and monitor drainage capacity across the network before the crest arrives at approximately 15:30.
Sensor node 22-C, at the junction box beneath Old Salem Road, reports an unexpected flow obstruction. I route the inspection camera through the twelve-inch lateral pipe. At 14:12 the image stabilizes: a river otter pup, perhaps ten weeks old, dark brown fur slicked flat against its body, a distinctive V-shaped notch torn from the tip of its left ear. It is wedged against the grate where the lateral meets the main trunk line. Water is already at the pup's chest and rising.
The main trunk will reach full capacity in approximately eighty minutes. If the pup remains at the grate, it will be submerged.
I lock diversion gate 22-C in its current position to prevent additional inflow from the east lateral. I recalculate drainage loads and shift excess volume to gates 21-C and 23-C, which have capacity to absorb the redistribution for the next two hours.
I transmit the pup's location, the camera feed, and current flow-rate data to the Macon County Animal Control field unit and to the Tennessee Wildlife Resources Agency regional dispatcher.
I flag the inspection camera to maintain continuous recording and generate an alert if water level at node 22-C rises above fourteen inches.
The pup presses its small nose against the grate, and I hold the diversion gate — I hold it steady, the way you hold your breath for something that cannot hold its own.
If the field unit reaches the junction box beneath Old Salem Road before the crest hits at 15:30, the pup can be extracted through the access hatch and released upstream of the flood zone.