Gulf Coast Gauges

Tarkington Bayou at SH 105 water level

Harris County Flood Warning System gauge 1975 · Tarkington Bayou · Luce Bayou watershed

121.30 ft

water surface elevation, Oct 20, 2026 at 11:07 AM CDT · 2 hours ago

Below top of bank
11.2 ft
Top of bank
132.5 ft
Lowest since Sep 11
120.94 ft
Highest since Sep 11
121.49 ft
Usual range
121.02 to 121.35 ft
Latest vs usual
Within usual range

Of the 274 readings stored for this gauge, 80.3% were lower than the reading above. The closest this gauge has come to its top of bank in that period is 11.0 ft.

No National Weather Service alert covering Harris County was active when this page was generated (Oct 20, 2026 at 1:35 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

121.0 121.3 121.5 Oct 14 Oct 15 Oct 16 Oct 17 Oct 18 Oct 19 Oct 20

Hourly averages of readings as published. The shaded band is this gauge's usual range: the middle 80% of its readings since Sep 11. This gauge reports about every 240 minutes, and only when its value changes, so gaps in the line are normal.

Most recent hourly readings
TimeLevelBelow top of bank
Oct 20, 11:00 AM CDT121.30 ft11.2 ft
Oct 20, 7:00 AM CDT121.38 ft11.1 ft
Oct 20, 4:00 AM CDT121.34 ft11.2 ft
Oct 20, 3:00 AM CDT121.33 ft11.2 ft
Oct 19, 11:00 PM CDT121.28 ft11.2 ft
Oct 19, 7:00 PM CDT121.24 ft11.3 ft
Oct 19, 3:00 PM CDT121.22 ft11.3 ft
Oct 19, 1:00 PM CDT121.23 ft11.3 ft
Oct 19, 11:00 AM CDT121.28 ft11.2 ft
Oct 19, 7:00 AM CDT121.35 ft11.2 ft

How to read this gauge

The number above is an elevation, not a water depth. It is the height of the water surface above mean sea level, so SH 105 reads around 121 ft even when the channel is low. What matters is the distance to the top of bank: the elevation at which water reaches the top of the channel at this location. For this gauge that is 132.5 ft.

The bottom of the channel here sits at 117.5 ft, so the channel is roughly 15.0 ft deep at this crossing. Harris County publishes the top-of-bank figure with each reading; it is their reference, not an estimate made here.

Daily highs and lows since September 11, 2026

120.9 121.2 121.5 2026-09-11 – 2026-10-20 · bars are daily low to high · blue below is daily rainfall, peak 0.64 in

Download the readings

tarkington-bayou-at-sh-105.csv (CSV): every reading stored for this gauge since September 11, 2026, 274 rows, updated with this page. Columns: time in UTC, time in Central, water surface elevation, top of bank, and distance below top of bank, all in feet. The source and accuracy notes below apply to the file too.

Put this gauge on your website

HOAs, MUDs, civic clubs and schools can show this gauge's latest reading on their own site. Paste this HTML where it should appear; the card updates with this page. More gauges.

In past storms

StormPeakPeak timeRiseBelow bank at peak
October 1–2, 2026121.36 ftOct 3, 2026 at 3:07 AM CDT0.3 ft11.1 ft

Storms are runs of National Weather Service flood alerts for Harris County; each storm page lists every gauge's peak.

All gauges in this watershed: Luce Bayou watershed water levels.