Lower Neches Valley Authority
| Lower Neches Valley Authority | |
|---|---|
| Location |
Southeast Texas counties Total: Jefferson, Hardin, Tyler Partial:Jasper, Liberty, Chambers |
| Primary inflows |
Neches River Pine Island Bayou |
| Primary outflows | Irrigation canals |
| Built | 1933 |
| Max. length | 400 mi (640 km) |
| Surface area | 700 sq mi (1,800 km2) |
| Water volume | 1,000,000,000 U.S. gal/d (3.8×109 L/d) maximum |
| Website | Official website |
| References | [1] |
The Lower Neches Valley Authority was established in 1933 as a district to store, control, conserve, and utilize the water of the lower Neches River valley in Texas. The LNVA, the second river district created by the state of Texas, is currently one of 23 river districts in the state. It includes all of Jefferson, Hardin, and Tyler counties and parts of Jasper, Liberty, and Chambers counties.[1]
Governance
The LNVA is governed by a board of nine directors appointed by the Texas Water Development Board.[1] Until 1943 the authority was without any facilities to produce revenue. Since 1943 the system, which supplies water to the cities (except Beaumont), industry, and rice growers of Jefferson County and portions of Chambers County and Liberty County, has been renovated many times.
The LNVA has also cooperated with the United States Army Corps of Engineers in planning, financing, and constructing several large multipurpose dams on the Neches River and Angelina River. Others projects sponsored by the authority include the construction of a permanent saltwater barrier on the Neches River, a comprehensive water-quality management program, and the construction of boat ramps and other recreational facilities on area waterways.[1]
The system
Canals
The LNVA system includes 400 miles of canals covering a 700 square mile area. The canals deliver fresh water to "...eight cities and water districts, 26 industries, and over 100 irrigated farms..." Water is drawn from the lower Neches River and Pine Island Bayou in north Beaumont with 21 large pumps delivering between 20,000 and 110,000 gallons of water a minute with a capability of delivering over one billion gallons of water a day.[1]
Salt water barrier
A permanent saltwater barrier across the Neches River is located downstream of confluence of Pine Island Bayou and the Neches River within one-half mile of the confluence point. The barrier, constructed between 2000 and 2003, prevents saltwater contamination during periods of low river flows. The permanent saltwater barrier project had a budgeted cost of $50 million with the federal government paying 75% of the cost and the LNVA responsible for the remaining 25%.[2] The barrier, over 1,000 feet long, includes a 650 foot long overflow barrier; five forty-five foot wide tainter gates; and a fifty-six foot wide navigation lane regulated by two thirty foot sector gates. Temporary barriers were installed across Pine Island Bayou and the Neches River upstream of the confluence 36 times between 1940 and 2000 prior to construction of the permanent barrier.[3][4]
The salt water barrier project also provides recreational opportunities. Public launching ramps are located on the Jefferson County side of the barrier. The state of Texas created its sixty-first (61st) canoe paddling trail in 2014. The trail begins at the salt water barrier and progresses north into waters included in the Big Thicket National Preserve.[5]
References
- 1 2 3 4 5 "LNVA". Lower Neches Valley Authority. Retrieved November 10, 2015.
- ↑ "H.B. Zachery wins $33.8 mil. pact with the U.S. Army Corps". San Antonio Business Journal. October 22, 2000. Retrieved November 10, 2015.
- ↑ "Neches River Saltwater Barrier". Cooperative Conservation America. Retrieved November 11, 2015.
- ↑ "Port of Beaumont". Healthy Texas Ports. Retrieved November 10, 2015.
From 1934-1993 temporary saltwater barriers were installed in 26 of the years. A permanent barrier’s cost was estimated at $74.7 million by the U.S. Army Corps of Engineers showing a clear benefit. In 2003, a saltwater barrier was completed about eight miles north of Beaumont. The barrier, with its adjustable gates, keeps salt water from moving up the river during periods of low flows.
- ↑ "61st Texas paddling trail unveiled on Neches River". Hearst Newspapers II, LLC. Retrieved November 10, 2015.