Environmental monitoring
Few or no recent measurements available
Gauge availability and water-quality observations describe their own locations and dates—not every point on this waterbody.
river
Catawba River
Maps, monitoring sites and assessments for this waterbody. Measurements describe individual sites or segments, not conditions across the entire river or lake.
Open in the atlas →Catawba River water quality
2 linked assessment segments and 0 monitoring sites are available here. Assessment reporting cycles: 2022. Assessment results apply to the named segments and uses; monitoring samples apply to their collection sites and dates. Neither provides a river-wide swimming or drinking-water verdict.
Inspect water quality assessments and monitoring sites · EPA ATTAINS source
Streamflow
CATAWBA RIVER NEAR ROCK HILL, SC: 943 ft³/s on 2026-09-25, daily mean. US Geological Survey.
This selected gauge measures flow at its named location, not everywhere along Catawba River. It is not a water-safety result. Read the gauge details and limitations.
Catawba River — CATAWBA RIVER NEAR ROCK HILL, SC measurement history
Daily source records from 1990-01-01 through 2026-09-25. Explore how these measurements changed over time. These measurements describe water quantity, not drinking-water safety.
Download the published daily history · 1.8 MB
Preparing the waterbody map…
Water quality assessments
2 assessed segments
Each assessment applies to a specific stretch of water and reporting period. It lists the uses assessed, any problems found, and the official status; it does not rate the whole river.
CATAWBA RIVER (Lake Hickory below elevation 935)NC11-(53) · 2022 · gooddrinking water: Fully Supporting · ecological: Insufficient Information · recreation: Insufficient Information
CATAWBA RIVER (Rhodhiss Lake below elevation 995)NC11-(37)c · 2022 · gooddrinking water: Fully Supporting · ecological: Insufficient Information
History
Monitoring history near Catawba River
We do not have historical measurements to show here. This does not mean monitoring has never taken place.
History coverage
Lake Hickory
Historical measurements are not available here.No stable authoritative machine-readable historical Duke Energy endpoint was verified; WQP samples remain site-specific and irregular.
Assessment history
Assessments by river segment
Each point is the status reported for a specific segment in that assessment cycle, not a river-wide continuous condition.
Documented relationships
Connected water network
CATAWBA RIVER (Lake Hickory below elevation 935)has assessment unit · direct source name and geometry · high confidenceNo detail page
Rock Hillnearby water · spatial distance · high confidenceNo detail page
Fort Millnearby water · spatial distance · high confidenceNo detail page
CATAWBA RIVER (Rhodhiss Lake below elevation 995)has assessment unit · direct source name and geometry · high confidenceNo detail page
Hickorynearby water · spatial distance · high confidenceNo detail page
Lake Hickory / Catawba River intakefed by · manual curated · high confidenceNo detail page