NEW YORK, Aug 13 (Reuters) - Crude oil flows on the

Seaway pipeline in Texas fell on Wednesday, four sources said,

as the pipeline's operator reported a leak on the system to

state regulators.

The 950,000-barrel-per-day Seaway pipeline runs between

Cushing, Oklahoma, and the Freeport, Texas, area and connects to

the Enterprise Crude Houston (ECHO) terminal, a storage facility

in southeast Houston.

Pipeline owner Enterprise said a crude oil leak on

part of the Seaway pipeline system in Houston occurred on

Tuesday, according to a filing with the Texas Commission on

Environmental Quality.

A portion of the pipeline went down on Tuesday night, three

sources said on Wednesday. A separate source said the secondary

pipeline that runs into the ECHO terminal was out on Tuesday

night. Crude flows on the Seaway mainline and the portion

running into ECHO were seen lower on Tuesday night.

The Seaway pipeline is jointly owned by Enbridge

and Enterprise Products Partners ( EPD ).

Enbridge and Enterprise Products ( EPD ) did not immediately respond

to questions about the Seaway's operations.

U.S. West Texas Intermediate crude at East Houston

, also known as MEH, traded a 95-cent a barrel premium

to U.S. crude futures, the strongest since April.

MEH traded as much as 130-cent a barrel premium to U.S.

crude futures this morning, a trader said.

Operations on the pipeline are expected to be restored later

on Wednesday, two sources said.