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NWS / NWPSSite ID: cdii2active

NWS / NWPS cdii2

Illinois River at Dresden Lock (tailwater)

Illinois River • Grundy • IL

Latest public reading489.53 ftObserved Jun 21, 2026 at 10:00 AM CDT
TrendRisingNo forecast linked
Data freshness DelayedObservation 98 minutes old
Flood contextNo source flood categoryFetched Timestamp unavailable

Stage and discharge

Observed source readings

Stage and discharge

Daily rollups and linked forecast values

Observed

Stage and discharge chart includes 18 observed points.

Line chart: Observed01002003004005002026-05-122026-06-082026-06-21
Data series

Flood-stage context

Source-published thresholds where available

Action491 ftSource-backed threshold

Forecast

Linked NWS/NWPS values

Forecast unavailable

Forecasts are not available for this gauge in RiverStat.us launch sources.

Observations

stage

489.53 ft

Observed Jun 20, 2026 at 7:00 PM CDT

stage

491.75 ft

Observed Jun 18, 2026 at 7:00 PM CDT

stage

490.73 ft

Observed Jun 17, 2026 at 7:00 PM CDT

stage

490.95 ft

Observed Jun 16, 2026 at 7:00 PM CDT

stage

493.3 ft

Observed Jun 13, 2026 at 7:00 PM CDT

stage

495.61 ft

Observed Jun 12, 2026 at 7:00 PM CDT

stage

486.05 ft

Observed Jun 8, 2026 at 7:00 PM CDT

stage

485.79 ft

Observed Jun 7, 2026 at 7:00 PM CDT

stage

484.53 ft

Observed Jun 5, 2026 at 7:00 PM CDT

stage

484.15 ft

Observed Jun 4, 2026 at 7:00 PM CDT

stage

484.24 ft

Observed Jun 1, 2026 at 7:00 PM CDT

stage

483.99 ft

Observed May 29, 2026 at 7:00 PM CDT

stage

484.57 ft

Observed May 26, 2026 at 7:00 PM CDT

stage

484.58 ft

Observed May 22, 2026 at 7:00 PM CDT

stage

484.34 ft

Observed May 19, 2026 at 7:00 PM CDT

stage

484.58 ft

Observed May 14, 2026 at 7:00 PM CDT

stage

484.52 ft

Observed May 13, 2026 at 7:00 PM CDT

stage

484.72 ft

Observed May 11, 2026 at 7:00 PM CDT

Alerts

Alerts unavailable

Alerts are shown only when the API returns a source-backed match.

Official public sources

Readings and thresholds stay tied to USGS, NOAA/NWS, or source-backed records.

Source freshness

Observed and fetched timestamps are shown separately when the API returns them.

Transparent methodology

Unavailable forecasts, alerts, and thresholds are shown as unavailable states.