Glossary
Reservoir
A reservoir is a water body created or enlarged by a dam to store runoff for flood control, hydropower, water supply, or recreation. On Lake Insights, reservoirs are the managed lakes whose levels follow rule curves—not free-flowing natural lakes.
Published May 16, 2026 · Editorial standards
Why it matters
Storage pools rise and fall on operator schedules, not only on rainfall. That shapes ramp access, timber exposure, current in the tailrace, and whether today's bass are on main-lake structure or far up a warming creek arm.
Technical context
Engineers distinguish active storage, flood storage, and dead storage below intakes. Recreation "full" is an operating target, not necessarily maximum physically possible storage.
On real lakes
Related lake intelligence
Lake Roosevelt
/lakes/roosevelt-wa
Lake Roosevelt is managed by U.S. Bureau of Reclamation (Grand Coulee Dam); NPS Lake Roosevelt National Recreation Area—typical impoundment with rule-curve storage and recreation bands.
Related lake intelligence
Lake Nottely
/lakes/nottely
Lake Nottely is managed by Tennessee Valley Authority (TVA)—typical impoundment with rule-curve storage and recreation bands.
Related lake intelligence
Lake Koocanusa
/lakes/libby
Lake Koocanusa is managed by U.S. Army Corps of Engineers (Libby Dam); BC Hydro coordination for Canadian reach—typical impoundment with rule-curve storage and recreation bands.
Reference information only. See data sources, editorial standards, or suggest a correction.