How high is the South Platte River at Fort Lupton, Co. right now?

The South Platte River at Fort Lupton, Co. is currently flowing at 305 cubic feet per second with a gage height of 3.83 feet, based on the most recent USGS instantaneous reading.

Is the flow on the South Platte River at Fort Lupton, Co. normal for this time of year?

Current flow is classified as very low for June 11. Today's discharge is at the 9th percentile compared to the long-term historical record at this gauge.

Is the South Platte River at Fort Lupton, Co. at flood stage?

No — the gage height is 7.17 feet below the NWS flood-stage threshold of 11.0 feet.

What is the historical median flow for the South Platte River at Fort Lupton, Co. on June 11?

The long-term median discharge for this date is 634 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 322 to 3,200 cfs.

Where is the South Platte River at Fort Lupton, Co. stream gauge located?

The South Platte River at Fort Lupton, Co. stream gauge is operated by the USGS in Weld County, CO on the Platte River. USGS site number 06721000 (coordinates 40.1161, -104.8181).

South Platte River at Fort Lupton, Co.

USGS Site No: 06721000 • Platte River • Weld County, CO

South Platte River at Fort Lupton, Co. on the Platte River is currently at 305 cfs (Very Low — 9th percentile for this date) . Gage height: 3.83 ft.

Reading from 1 week ago

↑ Upstream on Platte River

South Platte River at 64th Ave. Commerce City, Co.

Downstream on Platte River ↓

North Platte River Below Pathfinder Reservoir, WY

305

CFS Discharge

3.83

Gage Height (ft)

Very Low

Flow Condition

Normal

Flood Status

Historical Percentile Comparison

Today's discharge compared to the long-term record for June 11 at this station. Percentile rank shows what fraction of historical years had lower flow on this date.

Percentile	Label	CFS Threshold	Today's Flow
10th	Very Low threshold	322	Today: 305 cfs
25th	Low threshold	412
50th (Median)	Normal (median)	634
75th	High threshold	1,550
95th	Very High threshold	3,200

30-Day Hydrograph

Recent discharge plotted against the historical 10th–95th percentile envelope for the same calendar days. Source: USGS daily values + long-term statistics.

10th–95th historical Day-of-year median Recent discharge

30-Day Flow History

Date	Discharge (CFS)	Gage Ht (ft)
May 28, 2026	182	—
May 27, 2026	192	—
May 26, 2026	174	—
May 25, 2026	175	—
May 24, 2026	175	—
May 23, 2026	190	—
May 22, 2026	218	—
May 21, 2026	328	—
May 20, 2026	354	—
May 19, 2026	765	—
May 18, 2026	368	—
May 17, 2026	148	—
May 16, 2026	143	—
May 15, 2026	170	—
Apr 20, 2026	185	—
Apr 19, 2026	213	—
Apr 18, 2026	231	—
Apr 17, 2026	143	—
Apr 16, 2026	140	—
Apr 15, 2026	124	—
Apr 14, 2026	120	—
Apr 13, 2026	114	—
Apr 12, 2026	110	—
Apr 11, 2026	106	—
Apr 10, 2026	116	—
Apr 9, 2026	136	—
Apr 8, 2026	140	—
Apr 7, 2026	139	—
Apr 6, 2026	148	—
Apr 5, 2026	149	—

Station Information

USGS Site No: 06721000
State: CO
County: Weld County
Coordinates: 40.1161, -104.8181
Drainage Area: 5,043 mi²
Datum (ft): 4,860.7
HUC Code: 101900030602

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 10.0 ft
Flood Stage: 11.0 ft
Moderate Flood: 13.0 ft
Major Flood: 15.0 ft

Currently 7.17 ft below flood stage.

Recent Extremes

Max discharge: 2,160 cfs

May 26, 2025
Min discharge: 106 cfs

Apr 11, 2026
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Big Dry Creek at Mouth Near Fort Lupton, CO
3.3 mi · 30 cfs

Normal
St Vrain Creek below Boulder Creek at Highway 119 near Longmont
10.5 mi · 719 cfs

Normal
Boulder Creek at Mouth Near Longmont, CO
10.8 mi · 62 cfs

Normal
Left Hand Creek at Hover Road Near Longmont, CO
16.6 mi · 1 cfs

Very Low
Big Dry Creek at Westminster, CO
18.5 mi · 1 cfs

Very Low