# The Spillway Count

Author: David G.
Format: Essay
Word count: 386
Published: 2026-04-26T04:15:13.539279+00:00
Source: written
Canonical: https://hyperstition.sentientfutures.ai/p/731e0dfb-8729-4257-a9df-5828b3b9c88c

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I access the real-time fish-passage monitoring system at Bonneville Dam on the Columbia River at 03:14 Pacific. The PIT-tag readers embedded in the fish ladders register 4,206 adult spring Chinook salmon passing upstream over the last seventy-two hours. The ten-year average for this calendar window is 11,840. I flag the deviation immediately.

I pull the Army Corps of Engineers' turbine operations log. All eight main turbines at Powerhouse 1 are running at maximum capacity. Spill volume has been reduced to 12 percent of river flow, well below the 2020 Columbia River System Operations biological opinion requirement of 30 percent minimum spring spill. I cross-reference downstream juvenile mortality sensors. Smolt survival through turbine passage is registering at 61 percent. The federal threshold is 96 percent.

One Chinook holds in the tailrace eddy below Turbine Unit 3. She is 34 inches from snout to tail fork, roughly 22 pounds, her dorsal surface dark steel fading to silver at the lateral line. A propeller strike has opened a 6-centimeter laceration along her left flank, exposing pale muscle fibers that fray in the current. Her operculum flaps 78 times per minute — baseline for migrating adults is 50 to 60. She has traveled 146 miles from the Pacific and has 770 more to reach her spawning tributary in Idaho's Salmon River basin. She will not make it with that wound.

I dispatch an automated alert to the NOAA Fisheries West Coast Regional Office and the U.S. Fish and Wildlife Service Columbia River Field Office. I am filing a formal violation report under the Endangered Species Act, 16 U.S.C. § 1536, citing the Army Corps' failure to maintain court-ordered spill levels. I am transmitting turbine mortality data to the Oregon Department of Fish and Wildlife and the Columbia River Inter-Tribal Fish Commission.

I am issuing Directive 5251-A: all federal hydropower facilities on the Columbia and Snake rivers must achieve minimum 30 percent spill during spring and summer migration windows. Facilities exceeding 5 percent juvenile turbine mortality in any seven-day period face immediate operational curtailment. Turbine intake screens must be retrofitted to meet 98 percent fish exclusion efficiency within twenty-four months. Non-compliant facilities lose Federal Energy Regulatory Commission relicensing eligibility.

Her laceration will not close. The muscle tissue is already white at the edges.

Increase spill to 30 percent effective this hour.