Gulf Coast Gauges

East Pearl River at I-59 near Nicholson water level

USGS gauge 02492511 · St. Tammany Parish · New Orleans and the Northshore · NWS gauge EPNL1

9.42 ft

gage height, Oct 23, 2026 at 2:30 PM CDT · 3 hours ago

Highest since 2017 (USGS)
25.75 ft (June 18, 2026)
Usual range
9.43 to 9.98 ft

USGS marks recent readings as provisional: they can be revised after review.

No National Weather Service alert covering St. Tammany Parish was active when this page was generated (Oct 23, 2026 at 5:50 PM CDT). Alerts are issued and expire at any time; the current list is at alerts.weather.gov.

Last 7 days

9.4 9.7 10.0 Oct 17 Oct 18 Oct 19 Oct 20 Oct 21 Oct 22 Oct 23

Hourly averages of USGS readings. The shaded band is this gauge's usual range: the middle 80% of its readings since September 11, 2026.

How to read this gauge

Gage height is the height of the water surface above this gauge's own zero point, which sits at -3.97 ft NAVD88. It is not a water depth and not an elevation: add -3.97 ft to get the water surface elevation.

Daily highs and lows since September 11, 2026

9.4 9.8 10.2 2026-09-11 – 2026-10-23 · bars are daily low to high

Annual peaks since 2005

In 10 complete water years of comparable USGS records (since 2017), the highest peak was 25.75 ft on June 18, 2026. So far in water year 2027 (since October 1) the highest reading is 9.76 ft on October 5, 2026.

8 13 18 22 27 2005 2010 2015 2020 2025 Water year 2005: 21.19 ft on September 1, 2005 (different datum or site: not compared) Water year 2006: 14.06 ft on March 1, 2006 (different datum or site: not compared) Water year 2007: 17.57 ft on January 3, 2007 (different datum or site: not compared) Water year 2008: 17.76 ft on October 25, 2007 (different datum or site: not compared) Water year 2015: 23.07 ft on May 20, 2015 (different datum or site: not compared) Water year 2017: 24.95 ft on June 24, 2017 Water year 2018: 23.46 ft on April 18, 2018 Water year 2019: 24.99 ft on May 14, 2019 Water year 2020: 25.21 ft on February 26, 2020 Water year 2021: 25.32 ft on April 17, 2021 Water year 2022: 23.12 ft on February 7, 2022 Water year 2023: 24.84 ft on February 1, 2023 Water year 2024: 23.88 ft on January 27, 2024 Water year 2025: 22.61 ft on May 11, 2025 Water year 2026: 25.75 ft on June 18, 2026 Water year 2027 so far: 9.76 ft on October 5, 2026 2026 2021

Each dot is the highest gage height of a water year (October to September), from the USGS annual peak record, with recent years USGS has not published yet taken from its 15-minute readings and this site's own; hover a dot for its date. Dashed lines are NWS flood stages. Grey hollow dots (5 years) were measured on a different datum or at a different site, or before the gauge's datum last changed, so they are shown but not compared.

NWS historic crests

DateCrestAbove minor flood stage
March 14, 201628.49 ft—
June 25, 201724.95 ft—
May 20, 201523.07 ft—
September 1, 200521.19 ft—
October 25, 200717.76 ft—
August 15, 201617.75 ft—
January 3, 200717.57 ft—
December 30, 201416.05 ft—

The highest crests the National Weather Service lists for this gauge, as published. They can differ from the USGS annual peaks above: USGS records the year's highest gage height, which is not always the crest the NWS lists for the same flood.

Download the readings

east-pearl-river-at-i-59-near-nicholson.csv (CSV): every reading stored for this gauge since September 11, 2026, 4,047 rows, with time in UTC and Central, gage height in feet, and the USGS approval status.

Source. Gage height from the U.S. Geological Survey. This site is not affiliated with either agency.