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Brief History of the Bureau of Reclamation (Revised July 2000).
| 题名： | Brief History of the Bureau of Reclamation (Revised July 2000). |
| 关键词： | history, water supply, streams, federal programs, project planning, land development, construction, civil engineering, hydraulic structures, soils, agriculture, ground water, environmental issues, design criteria, operations, economic analysis, financial |
| 摘要： | In 1907, the USRS separated from the USGS to become an independent bureau within the Department of the Interior. The Congress and the Executive Branch, including USRS, were then just beginning a learning period during which the economic and technical needs of Reclamation projects became clearer. Initially, overly optimistic about the ability of water users to repay construction costs, Congress set a 10-year repayment period. Subsequently, the repayment period was increased to 20 years, then to 40 years, and ultimately to an indefinite period based on ability to pay. Other issues that arose included: soil science problems related both to construction and to arability (ability of soils to grow good crops); economic viability of projects (repayment potential) including climatic limitations on the value of crops; waterlogging of irrigated lands on projects, resulting in the need for expensive drainage projects; and the need for practical farming experience for people successfully to take up project farms. Many projects were far behind their repayment schedules, and settlers were vocally discontented. |
| 总页数： | u0707；12p |
| 报告类型： | 科技报告 |
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