active

USGS IV source page.

Active USGS instantaneous-value sites whose station metadata identifies a lake, reservoir, or pond gage.

All sources
Associated lakes343

Lake pages connected to this source through primary attribution or measurements.

CadenceNear-real-time where active sites publish current observations.

Published source refresh cadence or planning note.

Latest runpartial

Loaded 337 USGS instantaneous readings from 369 lake-like active sites. Failed states: AR, CA.

U.S. Geological Survey

Coverage, provenance, and connected lake pages.

Typeobserved lake and reservoir instantaneous values

Source classification used by the LakeStat ingestion plan.

Freshness target3h

Expected freshness window before a lake record starts aging.