East Fork Predicted to Rise 15 Feet in Next 24 Hours

(Updated with more Subdivisions/Streets at 9PM Tuesday) As yesterday’s heavy rains work their way downstream, the National Weather Service’s (NWS) Advanced Hydrologic Prediction Service forecasts that the East Fork at FM1485 will rise 15 feet in the next 24 hours.

As of noon Tuesday, NWS said the river had already reached the “Action Stage” at 56.85 feet. NWS predicts it will reach 71.9 feet by tomorrow at noon. “Major flooding” at that location begins at 69 feet.

*From NWS Advanced Hydrologic Prediction Service at noon on 4/30/24*

Jeff Lindner, Harris County’s meteorologist, says, “Many of the structures in this area have been elevated, however isolated homes that remain on the ground will be subject to flooding at these levels.”

“Flooding similar to TS Imelda in 2019 is expected.”
Jeff Lindner, Harris County Meteorologist

FM1485 will be under several feet of water. Flows may even approach the deck of the Highway 99 bridge!

Subdivisions and Streets that Could Be Affected

Lindner specifically warned about flooding that could affect the following subdivisions and streets.

Magnolia Point (West end of Commons of Lake Houston)

Opal Way
Diamond
Mendencino
Lassen Villa
Glen
Magnolia
Hill
Calvins
Collins
Calaveras Creek

Flooding of streets is likely. Elevated homes will be cut-offSome structure flooding is possible for any homes on the ground in this area.

South of FM 1485 (east side of the river):

Spalding
Green
Jett
Casey

Some structure flooding is possible for any homes on the ground in this area.

Idle Glen subdivision:

Brookside
Chinquapin
River Side
E. San Jacinto
Glenwood
Dipping
Idlewild
Lazy Creek

Almost all of the homes in this area are elevated, but will be cut-off. Any homes on the ground will be flooded.

Northwood Country Estates:

Flooding of streets is likely. Elevated homes will be cut-off.
Disher
Bounds
Thomas
Davidson
A new 553-acre Friendswood development called Sila is in this area.

River Terrace:

Flooding of the following streets is likely. Elevated homes will be cut-off.
River Terrace
Elm
Pine
Cherry Laurel
Holly
Cypress

Cypress Point:

The following streets will be flooded (closest to the river). Elevated homes will be cut-off.
Blue Lake
Oak Knoll
Wild Oak
Birchwood

The East Fork should also rise 10-15 feet at FM2090.

East Fork at Cleveland

Farther upstream at Cleveland, the East Fork has already peaked and is beginning to recede after only reaching a moderate level of flooding.

Structure Flooding In Kingwood NOT Expected

Lindner added that, “Flooding will occur in the low lying areas of Kingwood that back up to the East Fork of the San Jacinto River. This is mostly all non-developed lands near the river or back yards with bulkhead that front the river. Structure flooding is NOT expected in Kingwood.”

Meanwhile, at as of noon on 4/30/24, NWS predicts the West Fork will not flood.