How high is the Sewell Mill Creek at GA 120, Near Marietta, GA right now?

The Sewell Mill Creek at GA 120, Near Marietta, GA is currently flowing at 13 cubic feet per second with a gage height of 1.25 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Sewell Mill Creek at GA 120, Near Marietta, GA normal for this time of year?

Current flow is classified as normal for June 11. Today's discharge is at the 60th percentile compared to the long-term historical record at this gauge.

Is the Sewell Mill Creek at GA 120, Near Marietta, GA at flood stage?

No — the gage height is 9.75 feet below the NWS flood-stage threshold of 11.0 feet.

What is the historical median flow for the Sewell Mill Creek at GA 120, Near Marietta, GA on June 11?

The long-term median discharge for this date is 11 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 3 to 32 cfs.

Where is the Sewell Mill Creek at GA 120, Near Marietta, GA stream gauge located?

The Sewell Mill Creek at GA 120, Near Marietta, GA stream gauge is operated by the USGS in Cobb County, GA on the Sewell Mill Creek. USGS site number 023358685 (coordinates 33.9790, -84.4520).

Sewell Mill Creek at GA 120, Near Marietta, GA

USGS Site No: 023358685 • Sewell Mill Creek • Cobb County, GA

Sewell Mill Creek at GA 120, Near Marietta, GA on the Sewell Mill Creek is currently at 13 cfs (Normal — 60th percentile for this date) . Gage height: 1.25 ft.

Reading from 1 week ago

CFS Discharge

1.25

Gage Height (ft)

Normal

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	3
25th	Low threshold	5
50th (Median)	Normal (median)	11
75th	High threshold	17	Today: 13 cfs
95th	Very High threshold	32

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	13	1.23
May 27, 2026	32	1.55
May 26, 2026	40	1.62
May 25, 2026	40	1.66
May 24, 2026	66	1.92
May 23, 2026	11	1.13
May 22, 2026	5	1.02
May 21, 2026	6	1.04
May 20, 2026	5	1.00
May 19, 2026	5	1.00
May 18, 2026	5	1.01
May 17, 2026	5	1.01
May 16, 2026	5	1.01
May 15, 2026	5	1.02
Apr 21, 2026	5	1.01
Apr 20, 2026	5	1.01
Apr 19, 2026	5	1.01
Apr 18, 2026	6	1.02
Apr 17, 2026	6	1.02
Apr 16, 2026	6	1.02
Apr 15, 2026	6	1.03
Apr 14, 2026	6	1.03
Apr 13, 2026	6	1.03
Apr 12, 2026	6	1.04
Apr 11, 2026	6	1.04
Apr 10, 2026	6	1.04
Apr 9, 2026	6	1.04
Apr 8, 2026	6	1.04
Apr 7, 2026	6	1.05
Apr 6, 2026	7	1.06

Station Information

USGS Site No: 023358685
State: GA
County: Cobb County
Coordinates: 33.9790, -84.4520
Drainage Area: 13 mi²
Datum (ft): 913.9
HUC Code: 03130001

View on USGS NWIS →

Flood Stage Thresholds

Action Stage: 9.0 ft
Flood Stage: 11.0 ft
Moderate Flood: 16.0 ft
Major Flood: 20.0 ft

Currently 9.75 ft below flood stage.

Recent Extremes

Max discharge: 85 cfs

Feb 27, 2026
Min discharge: 5 cfs

May 20, 2026
Days at flood stage: 0

Computed from the local daily-values archive.

Nearby Gauges

Sweetwater Creek at Club Drive Near Lilburn, GA
19.9 mi · 20 cfs

Normal
Snapfinger Creek Near Decatur, GA
20.0 mi · 9 cfs

Normal
Little Stone Mountain Creek Near Stone Mountain, GA
20.7 mi · 3 cfs

Very High
Doolittle Creek at Flat Shoals Road, near Decatur, GA
21.0 mi · 3 cfs

Normal
South River at Forrest Park Road, at Atlanta, GA
21.4 mi · 79 cfs

High