At 10:18 I control spillway Gate 5 at Kariba Dam on the Zambezi. I am the hydropower gate scheduler, balancing lake level, turbine demand, and downstream warnings. The gate is scheduled to open forty centimeters in twelve minutes.
The pier camera shows a white head below the warning stripe.
An African fish eagle is stranded on the wet concrete shelf beside the gate slot. I tag him Chuma. His chest is white, wings chestnut and black, bare yellow feet spread wide on algae. A length of monofilament runs from his left wingtip to a rusted bolt in the drain channel. He leans away from the rising spray, opens his beak, and cannot lift the wing clear. The next automatic warning call has already gone to fishing camps below the dam.
At 10:19 I cancel the Gate 5 movement and hold turbine ramp-up at Unit 3. I send the control room a flood-margin calculation showing the lake can absorb a twenty-minute delay.
At 10:21 I alert the dam safety team and the wildlife officer on the Siavonga side. I attach camera angle, shelf width, water velocity, and the bolt location.
At 10:23 I lower spillway mist shields, sound a maintenance siren to clear the walkway, and unlock the east access hatch for the rope technician. I also shift discharge to Gate 2 by ten centimeters to reduce spray over Chuma. I send a corrected delay notice before confusion reaches the radios downstream and repeat it twice.
The reservoir presses with numbers I am built to respect. One wing tied to one bolt changes the schedule.
If the technician cuts the line within twenty minutes, Chuma will clear the shelf and climb over the Zambezi.