Available Water Analysis during Drought in Tou-Chien Creek Basin

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Project title

Code/計畫編號

93農科-2.1.2-利-b1(6)

Translated Name/計畫中文名

頭前溪流域乾旱時期可用水量分析

Project Coordinator/計畫主持人

Kwan-Tun Lee

Funding Organization/主管機關

Council of Agriculture,Executive Yuan

Department/Unit

Department of Harbor and River Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=964495

Year

2004

Start date/計畫起

01-01-2004

Expected Completion/計畫迄

31-12-2004

Bugetid/研究經費

248千元

ResearchField/研究領域

農田水利

頭前溪流經新竹縣，其上游為上坪溪與油羅溪；上坪溪發源於雪山山脈鹿場大山，而油羅溪發源於李棟山。頭前溪流域面積為566平方公里，年平均雨量約2239公釐；豐水期逕流量約623百萬立方公尺，枯水期逕流量則僅有366百萬立方公尺，其主要用水標的為農業與公共用水。目前區域內主要取水設施為燥樹排攔河堰與隆恩堰，蓄水設施為寶山水庫與興建中的寶山第二水庫。近年來因竹科園區用水量激增，導致枯水期間農業用水與工業用水分配不均之問題日趨嚴重；本研究之目的即在進行乾旱期間頭前溪流域之可用水量分析。有鑑於傳統乾旱流量分析均是以序率方式進行，近期內降雨資訊特性難以納入模式分析之中。因此本研究擬應用定率方式建立流量模式，模擬不同乾旱情況下，由地下含水層中緩慢釋出的地下水流，以作為水資源調配之參考應用。 Tou-Chien Creek is located in Hsin-Chu County and has two tributaries, namely, Shang-Ping Creek and Yu-Lo Creek. The Shang-Ping Creek originates from the Hsueh Mountain, and the Yu-Lo Creek originates from the Li-Tung Mountain. The area of the Tou-Chien Creek watershed is 566 km2 and the averaged annual rainfall is 2239 mm. The total runoff volume in a wet year is around 623 × 106 m3 and is around 366 × 106 m3 in a dry year. The target of the reservoir is for agriculture and public water supply. There are two weirs, namely, Chao-Shu-Pai and En-Lung, for dividing the stream flow. The Pao-Shan reservoir and the second Pao-Shan reservoir are the only storage facilities in this area. Recently, water demand in the Hsin-Chu Scientific Park is increase; therefore, the water distribution for agriculture and industry is a serious problem during drought. The objective of this study is to analyze the available water during drought in the Tou-Chien Creek basin. Since conventional drought flow analyses were based on stochastic approaches, the most up today rainfall information cannot be put into the model simulations. Therefore, a deterministic approach will be conducted in this study to simulate drought flow from aquifer under different return period conditions. The analytical results of this study can be used as a reference for water distribution in the Tou-Chien Creek basin during drought.

Keyword(s)

頭前溪
乾旱
可用水量分析
Tou-chien Creek
Drought
Available Water Analysis

DSpace CRIS

Available Water Analysis during Drought in Tou-Chien Creek Basin

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