Lower Monumental Lock and Dam

USACE's revised (CBT-REV) river and reservoir series at the project this plant belongs to: each as the CWMS Data API served it or, where that API served none, as USACE's Dataquery served it, and each names its service. The two are never mixed within a series. Water quantities, not generation: neither serves a generation series for this project, and the plant's generation on this page is EIA-923's. 2024-01-10 09:00 UTC to 2024-01-20 08:00 UTC: 240 hours, hour ending, UTC, the same hours as January 2024 cold spell.

• Forebay elevation · ft NGVD29The reading at the stamp: the end of each hour shown. 240 of 240 hours with a value.Dataquery writes this stamp in PST, UTC-8 all year with no daylight saving and no offset in the stamp; it is shown at the stamp +8 h, in UTC.LMN.Elev-Forebay.Inst.1Hour.0.CBT-REV
  Dataquery query ↗retrieved 2026-09-29 05:03:39 UTC
• Outflow · kcfsThe mean over the hour ending at the stamp, the same hour-ending convention as the episode. 240 of 240 hours with a value.Dataquery writes this stamp in PST, UTC-8 all year with no daylight saving and no offset in the stamp; it is shown at the stamp +8 h, in UTC.LMN.Flow-Out.Ave.1Hour.1Hour.CBT-REV
  Dataquery query ↗retrieved 2026-09-29 05:03:55 UTC
• Spill · kcfsThe mean over the hour ending at the stamp, the same hour-ending convention as the episode. 240 of 240 hours with a value.Dataquery writes this stamp in PST, UTC-8 all year with no daylight saving and no offset in the stamp; it is shown at the stamp +8 h, in UTC.LMN.Flow-Spill.Ave.1Hour.1Hour.CBT-REV
  Dataquery query ↗retrieved 2026-09-29 05:04:10 UTC

Neither service versions these series: USACE revises values in place, so a later retrieval can differ. These are the publisher's revised series as served at the retrieval time recorded with each query. Each value keeps the CWMS quality code it was served with; code 0 is CWMS's code for an unscreened value. A value served with CDA's missing-value placeholder, or with a code that marks it missing or rejected, is shown as missing. Codes served here: 0. Keyed by USACE’s own alias: USACE's NIDID agency-alias group maps NID WA00270 (this plant's reviewed dam) to NWDP location LMN; CWMS location 'Lower Monumental Lock and Dam' is a PROJECT in WA, 0.14 km from the EIA plant point; its name shares 'lower', 'monumental', 'lock' with the NID dam name. NIDID alias group ↗ · Location record ↗ · CWMS Data API source record · Dataquery source record. U.S. Army Corps of Engineers, Northwestern Division, CWMS Data API (revised CBT series, as served at retrieval); U.S. Army Corps of Engineers, Northwestern Division, Dataquery 2.0 (revised CBT series, as served at retrieval). Checks: water.units_match_declared passed · water.missing_stays_null passed · water.location_key_verified passed · water.series_complete passed.