Rivers
The rich network of rivers in Sri Lanka make the island an oasis at any time of year, naturally watering the paradise garden with its splendid heritage. The highest concentration of rivers and lakes is found in the south-west of the country, making it possibly the most fertile area in Sri Lanka.
瓦拉韦河
Walawe Ganga 是一条重要的 河流,流经斯里兰卡的南部和中部,源自位于 斯里兰卡 中部山脉的 乌达瓦拉威国家公园 附近。它流经 拉特纳普拉、马塔拉 和 汉班托塔 等地区,提供了斯里兰卡南部和干旱区农业所需的重要水源。它通过风景如画的山谷、平原和低地,使其成为该地区重要的自然景观,特别是对依赖其水源进行农业和日常生活的社区来说。
Walawe 河是一个重要的灌溉水源,支持斯里兰卡南部大规模的农业生产。河流的水流滋养了广阔的稻田、水果和蔬菜,确保了许多农村家庭的 食品安全。此外,由 Walawe 河形成的乌达瓦拉威水库对调节该地区的水供应至关重要,并通过乌达瓦拉威水电站提供电力,使其成为斯里兰卡农业和能源生产的关键资源。
在生态方面,这条河流支持着多样化的栖息地,特别是在 乌达瓦拉威国家公园 周围,该公园是该国的主要 野生动物保护区。河水滋养了湿地和河岸,使它们成为支持 生物多样性 的重要组成部分,包括 大象、水牛、鸟类和其他 野生动物 物种。Walawe Ganga 为公园丰富的生态系统做出了贡献,这些生态系统成为了生态旅游、野生动物摄影和 野生动物园游览的热门目的地。这条河的生态重要性与该地区的保护工作密切相关。
文化上,Walawe Ganga 对 斯里兰卡南部的 历史 产生了深远影响,在古代 斯里兰卡的灌溉系统的发展中发挥了重要作用。今天,这条河流仍然是当地人民生活的重要组成部分,支持着农村定居点、农业社区,并为日常生活提供水源。作为一个重要的水源,它对生活在河岸附近的社区也具有重要的 文化 和精神价值。
洪水风险与水文重要性
Walawe Ganga 虽然对农业和能源生产至关重要,但它在强降雨季节容易发生洪水风险。了解其水文行为对斯里兰卡南部和中部地区的有效洪水管理至关重要。
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当前水文读数(官方报告):
莫拉凯蒂亚站 – 警戒水位:3.00 米,轻度洪水水位:5.00 米,严重洪水水位:7.00 米,当前水位:4.78 米(警戒,正在上升)。 - 易受洪水影响的地区:在强降雨事件期间,靠近 拉特纳普拉、莫拉凯蒂亚和周边地区的低洼定居点和农田容易发生洪水。
- 集水区敏感性:河流的集水区,包括中部高地,在强烈的季风降雨期间可能会快速汇水,从而大大增加下游的水流量。
- 对农业的影响:河水水平的急剧上升可能会使灌溉渠道溢出,损坏作物并导致农田积水。
- 沿海区域排水慢:随着河流接近沿海平原,水流缓慢,增加了农业区长期洪水的风险。
- 城市风险: 马塔拉 镇及其周边城市区域在雨季期间可能面临水位上升的风险,亟需有效的洪水管理策略。
- 持续监测的必要性:持续监测莫拉凯蒂亚站的水位对预测洪水事件并管理其对周边社区的影响至关重要。
尽管 Walawe Ganga 在维持农业和能源生产方面发挥着至关重要的作用,但它对降水和洪水风险的敏感性意味着,持续监测和洪水管理策略对缓解依赖该河流的社区和工业的风险至关重要。
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Mahaweli RiverExplore the majestic Mahaweli River, Sri Lanka’s longest river, offering serene boat rides and opportunities for birdwatching and nature adventures along its winding course through scenic valleys.
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Kelani RiverThe Kelani River is a 145-kilometre-long (90 mi) river in Sri Lanka. It flows through or borders the Sri Lankan districts of Nuwara Eliya, Ratnapura, Kegalle, Gampaha and Colombo.
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Kalu GangaKalu Ganga is a river in Sri Lanka. Measuring 129 km (80 mi) in length. The mountainous forests in the Province and the Sinharaja Forest Reserve are the main sources of water for the river.
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Walawe RiverThe southern region of Sri Lanka is exalted by a bushel of enthralling and glorified rivers and the Walawe River is one of them. Gently flowing through the Udawalawe National Park, the Walawe River provides water for a multitude of species of mesmerising fauna.
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Deduru OyaThe Deduru Oya Dam is an embankment dam built across the Deduru River in Kurunegala District of Sri Lanka. Built in 2014, the primary purpose of the dam is to retain approximately a billion cubic metres of water for irrigation purposes, which would otherwise flow out to sea.
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Malwathu OyaThe Malvathu River long river in Sri Lanka, connecting the city of Anuradhapura, which was the capital of the country for over 15 centuries, to the coast of Mannar. It currently ranks as the second longest river in the country, with a great historic significance.
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Kala OyaIt was around these ancient tank (water storage reservoir) irrigation systems that the economy and human settlements of early Sri Lankan society were organised into a “hydraulic civilization”.
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Gal OyaDiscover Gal Oya, a tranquil sanctuary in Sri Lanka, known for its lush landscapes, rich wildlife, and serene boat safaris, offering a peaceful retreat surrounded by nature and wildlife.
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Gin GangaThe Gin Ganga, is a 115.9 km (72 mi) long river situated in Galle District of Sri Lanka. The river's headwaters are located near Deniyaya, bordering the Sinharaja Forest Reserve.
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Kirindi OyaExperience the serene beauty of Kirindi Oya, a tranquil river in Sri Lanka. Enjoy scenic boat rides, lush landscapes, and opportunities for birdwatching, offering a peaceful escape into nature.
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Kumbukkan OyaThe Kumbukkan Oya is the twelfth-longest river of Sri Lanka. It is approximately 116 km (72 mi) long. Its catchment area receives approximately 2,115 million cubic metres of rain per year.
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Maduru OyaThe Maduru Oya is a major stream in the North Central Province of Sri Lanka. It is approximately 135 km (84 mi) in length. approximately 3,060 million cubic metres of rain per year
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Manik RiverExplore the peaceful Manik River, surrounded by lush greenery and rich wildlife. Enjoy scenic boat rides and nature walks, offering a serene and refreshing experience.
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Yan OyaThe Yan Oya, 142 km long and receives 2,371 million cubic meters of rainfall annually, with 17% flowing to the sea. Its catchment area covers 1,520 square kilometers.