Seawater Irrigation Is Solution To Water Shortages

"In the United States, agriculture is the main user of surface water and surface water, accounting for 80% of the country's water consumption, accounting for more than 90% in many Western European countries" ("irrigation and water" ). As the population grows, demand for our food and agriculture is also rising. Therefore, a more efficient irrigation system is necessary. "The US is tightening faucets for farmers," Bloemeckert said the government reduced supply of agricultural water supply in 2009, or refused to supply. In Central Valley, the government refused to supply water to more than 200 water bodies.

Assuming that 70% of the earth's surface is water and its volume remains the same (1,386,000,000 cubic kilometers), what is the possibility of water shortage? Then, 97.5% of the seawater is not suitable for human consumption. Population and temperature are rising. In other words, we have a lot of pressure on the fresh water we have. World water demand is projected to increase by 55% between 2000 and 2050. Most of the demand comes from agriculture, which accounts for 70% of the world's freshwater use, and by 2035 food production needs to increase by 69% to meet increasing demand. It is a population. The amount of water used to cool the power plant is also expected to increase by more than 20%. In other words, there will be a large freshwater loss in the near future.

Many cities face water shortages during the dry and dry seasons. The underdeveloped lawn irrigation system is part of this problem. Niemela discovered that 50% of the city's water demand comes from lawn irrigation in Douglas County, Colorado (2007). Other studies have reported that the city lost up to 60% of the lawn irrigation water due to insufficient irrigation systems (Sharp and Garcia - Fresca 2003). Like many other places, Los Angeles is a western city of the United States, with water shortages (Quinn 1968), a lack of proper irrigation and drainage system construction (Torres-Rouff 2006), and a structured water distribution system (Xiao We are working on et al). . 2006) Despite these problems, solutions have not been found yet.

As we all know, Los Angeles County (map 1) is known for the lack of water. Continuous drought and excessive use of existing water resources irrigated in cities such as urban parks and golf courses further exacerbate this harsh situation. One cause of the water shortage in Los Angeles County is that the residents who irrigate the grass excessively and directly irrigate the concrete surface waste a lot of water. As a result, wasted feed water evaporates or is introduced into the rainwater pipeline system to the Pacific Ocean. If these customs continue, the future Angelinos will find more water from their distant sources to their counties. Therefore, it is necessary to use GIS-based management system to support the evaluation and establishment of a responsible outflow recovery system that can be used for irrigation and drinking water.