Harris Gully at South McGregor Way water level

Harris County Flood Warning System gauge 400 · Harris Gully · Brays Bayou watershed

Of the 260 readings stored for this gauge, 43.5% were lower than the reading above. The closest this gauge has come to its top of bank in that period is 16.6 ft.

Last 7 days

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.

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 South McGregor Way reads around 21 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 39.1 ft.

The bottom of the channel here sits at 20.6 ft, so the channel is roughly 18.5 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

Download the readings

harris-gully-at-south-mcgregor-way.csv (CSV): every reading stored for this gauge since September 11, 2026, 260 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

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: Brays Bayou watershed water levels.