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Old Main Drain No 2 at SH 4, Brownsville water level

Canal gauge, Old Main Drain No 2, Texas, United States

Directions

High for mid-October

Water level

1.49ft Steady over the last 24 hours

Flow
0.7 cfs
1.0 1.3 1.5

History

1.01.31.51.8ftOct 16Oct 17Oct 18Oct 19Oct 201.01.31.51.8ftOct 16Oct 18Oct 20
24ftSep 21Sep 28Oct 5Oct 12Oct 2024ftSep 21Oct 5Oct 20
24ftOct 2025Jan 2026Apr 2026Jul 2026Oct 202624ftOct 2025Apr 2026Oct 2026
24ftJanMarMayJulSepNov202624ftJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The gauge at Old Main Drain No 2 at SH 4, Brownsville shows 1.49 ft, above normal for mid-October.

The median for mid-October is 1.31 ft, based on 6 years of readings, so the canal level is 0.18 ft above typical. On the same day last year the reading was 1.43 ft, a difference of +0.06 ft.

It has barely moved over the past 24 hours. Over the past 30 days it has moved between 1.45 ft and 4.66 ft.

Compared with 6 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
1.31 ft0.18 ft above the median for this date
Normal for this date
0.89 ft – 1.56 ft8 years in 10 fall in this range (6 years of records)
Same day last year
1.43 ft+0.06 ft
Lowest and highest in 30 days
1.45 ft – 4.66 ft
Lowest and highest in 12 months
0.75 ft – 4.66 ft

Weather at the gauge

No rain in the last 3 days.

18 Sun 77° 60° – Wind 16 mph
19 Mon 81° 65° – Wind 12 mph
20 Tue 80° 68° – Wind 11 mph
21 Wed 85° 72° 0.23 in, 38% Wind 16 mph
22 Thu 83° 74° – Wind 13 mph
23 Fri 85° 73° – Wind 14 mph
24 Sat 85° 75° 0.01 in Wind 15 mph

Forecast: Open-Meteo

Sunrise 07:32 AM Sunset 06:58 PM Daylight 11 hr, 27 min First quarter 66%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
North Main Drain at Ostos Rd, BrownsvilleRiver gauge, North Main Drain 1.49 ft No reference yet −0.07 ft 2.7 mi
Cameron Co Ditch 1 at FM 802, BrownsvilleCanal gauge, Cameron Co Ditch 1 1.45 ft Normal +0.01 ft 3.4 mi
Resaca del Rancho Viejo, BrownsvilleLake 17.06 ft No reference yet −0.02 ft 3.9 mi
N Main Drain at Manzano St, BrownsvilleRiver gauge, N Main Drain 1.0 cfs Low −0.1 cfs 4.9 mi
N Main Drain at Boca Chica Hwy, BrownsvilleRiver gauge, N Main Drain 2.9 cfs Normal +0.8 cfs 6.1 mi
Town Resaca at E 6th St, BrownsvilleLake, Town Resaca 0.2 cfs Very low +0.1 cfs 7 mi
Cameron Co Ditch 2 at FM 1847 near Los FresnosCanal gauge, Cameron Co Ditch 2 1.56 ft No reference yet +0.09 ft 11 mi
Brazos Santiago Pass at South Padre IslandEstuary gauge, Brazos Santiago Pass 1.38 ft No reference yet −0.22 ft 17 mi

Questions and answers

Is Old Main Drain No 2 at SH 4, Brownsville higher than last year?

Yes, it is 0.06 ft higher than on the same day last year, when the reading was 1.43 ft.

What is a normal level for Old Main Drain No 2 at SH 4, Brownsville in mid-October?

The median for mid-October is 1.31 ft. In 8 years out of 10 the reading falls between 0.89 ft and 1.56 ft, based on 6 years of records.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Old Main Drain No 2 at SH 4, Brownsville today?

On Oct 20, 2026, 01:30 AM CDT, the water level was 1.49 ft. Steady over the last 24 hours.

Is Old Main Drain No 2 at SH 4, Brownsville rising or falling?

Steady over the last 24 hours. Down 0.06 ft over the last 7 days.

Is the level of Old Main Drain No 2 at SH 4, Brownsville normal?

High for mid-October. Compared with 6 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:08474300 (Agency page)
Coordinates
25.91722, -97.37783 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 1.49 ft 2026-10-20 06:30 Provisional
Flow 0.7 cfs 2026-10-20 06:30 Provisional

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How to cite

U.S. Geological Survey: Old Main Drain No 2 at SH 4, Brownsville (usgs:08474300). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/texas/old-main-drain-no-2-at-sh-4-brownsville

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer