The negative effects of water level control in Mississippi

The negative effects of water level control in Mississippi to save the planet

Fig. 1. Gullies in the field pitted O'Brien Ridge.

When in May 2011, the water level in the Mississippi River rose to almost two meters, a plan 80 years ago to open dams began to become reality, which angered local landowners. Indeed, since the last major flood in 1937 to absorb the excess water was sufficient Madrid bypass channel. Against him had been a lot of land holders, but then the water level is almost 1.5 meters higher than expected, and the U.S. Supreme Court upheld the idea to open the dam and let the water.

The appearance of the Madrid bypass channel led to many negative consequences. There has been a significant erosion of soil in the area Berds Point, Missouri, on farmland formed deep gullies 54 ha and crater lakes, irrigation structures damaged, homes and farms. To protect against such damage, the Association of Engineers were used fusible plug of sand height of 1.8 meters, the additional importation of soil and upgrade the drainage system. Fore River dam raised to 1.7 meters, which is 20 cm below the normal level.

The hardest thing to deal with, with deep ravines, which were formed at 8 km from the dam, and the restoration of soil suitability, lost carbohydrate stores. According to experts, fertility may resume if these lands to arrange temporary swamps and leave them for the settlement of wild animals.

On the subject was published the article "Effect of stimulated lower levels of dams on agricultural land in the valley of the Mississippi River in 2011." It addresses issues of intensive formation of dams and soil erosion, which has a negative impact on yields. The use of strip cropping, contour livestock drainage channel has had a positive effect on your state of soils. However, fewer tools at their conservation and special ponds intact, although some of the water tank, caused river flooding in Missouri, is now used for breeding fish.

The authors make recommendations on how to protect the flat fertile soils with poor drainage conditions. Need to build a temporary reservoir, change the rotation crops, increasing the forage crops. Damaged crop area should be planted with forest or grass, to revive the process of accumulation of water. New dams should be stronger and more. Sometimes it is necessary to interrupt the cultivation of land floodplains and lower the height of the dams.

An example of a successful control of the water level and rainfall can be dam-drainage area on the island. Snay, where all the marshy areas of strategic location, developed a system of pools, supplying nutrients and control dams, which allows to react to local flooding. It should be noted that almost half of the budget goes to pay for the development of fuel required to maintain the health of three pumping stations on about. Snay. Developers see the solution to the economic difficulties in attracting additional funding through eco-tourism and recreational potential of the opening of the region.

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