How high is the Chocolate Bayou near Alvin, TX right now?

The Chocolate Bayou near Alvin, TX is currently flowing at 363 cubic feet per second with a gage height of 16.88 feet, based on the most recent USGS instantaneous reading.

Is the flow on the Chocolate Bayou near Alvin, TX normal for this time of year?

Current flow is classified as high for June 11. Today's discharge is at the 82th percentile compared to the long-term historical record at this gauge.

What is the historical median flow for the Chocolate Bayou near Alvin, TX on June 11?

The long-term median discharge for this date is 45 cfs based on USGS daily statistics. The 10th–95th percentile range historically is 12 to 863 cfs.

Where is the Chocolate Bayou near Alvin, TX stream gauge located?

The Chocolate Bayou near Alvin, TX stream gauge is operated by the USGS in Brazoria County, TX on the Chocolate Bayou. USGS site number 08078000 (coordinates 29.3715, -95.3231).

Chocolate Bayou near Alvin, TX

USGS Site No: 08078000 • Chocolate Bayou • Brazoria County, TX

Chocolate Bayou near Alvin, TX on the Chocolate Bayou is currently at 363 cfs (High — 82th percentile for this date) . Gage height: 16.88 ft.

Reading from 1 week ago

363

CFS Discharge

16.88

Gage Height (ft)

High

Flow Condition

N/A

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	12
25th	Low threshold	24
50th (Median)	Normal (median)	45
75th	High threshold	68
95th	Very High threshold	863	Today: 363 cfs

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	809	20.97
May 27, 2026	535	18.39
May 26, 2026	348	16.64
May 25, 2026	855	21.15
May 24, 2026	1,600	25.32
May 23, 2026	667	19.25
May 22, 2026	497	18.33
May 21, 2026	757	20.61
May 20, 2026	387	16.30
May 19, 2026	16	11.39
May 18, 2026	16	11.39
May 17, 2026	15	11.37
May 16, 2026	16	11.39
May 15, 2026	17	11.43
Apr 20, 2026	94	13.11
Apr 19, 2026	133	13.61
Apr 18, 2026	17	11.42
Apr 17, 2026	17	11.45
Apr 16, 2026	16	11.41
Apr 15, 2026	17	11.45
Apr 14, 2026	19	11.50
Apr 13, 2026	19	11.50
Apr 12, 2026	21	11.57
Apr 11, 2026	24	11.67
Apr 10, 2026	15	11.36
Apr 9, 2026	14	11.32
Apr 8, 2026	14	11.32
Apr 7, 2026	14	11.31
Apr 6, 2026	14	11.33
Apr 5, 2026	15	11.37

Station Information

USGS Site No: 08078000
State: TX
County: Brazoria County
Coordinates: 29.3715, -95.3231
Drainage Area: 88 mi²
Datum (ft): -1.5
HUC Code: 12040204

View on USGS NWIS →

Recent Extremes

Max discharge: 1,710 cfs

Jun 13, 2025
Min discharge: 11 cfs

Oct 13, 2025

Computed from the local daily-values archive.

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