卡卢恒河
卡鲁甘加，也被称为黑河，是斯里兰卡最重要的河流之一，流经西部省份的美丽风景。从中央山脉起源，穿过丰富的生物多样性区、郁郁葱葱的森林和农业用地，最终在卡鲁塔拉附近注入印度洋。其黑色的水流通过陡峭的峡谷和开阔的平原，与周围的绿色山丘和沿海平原形成鲜明的对比。
几个世纪以来，卡鲁甘加一直是该地区水资源管理系统发展的核心。它为多个水库提供水源，包括著名的莫拉加汉达和科特马勒水库，这些水库为灌溉和水力发电提供水源。该河流长期支持农业，尤其是稻米种植和蔬菜种植，主要集中在如拉特纳普拉、卡鲁塔拉及其周边地区。
在生态学上，卡鲁甘加流域是多种野生动物的栖息地。其密集的森林和河流生态系统支持本土物种，河流的红树林水域也是迁徙的鸟类、鱼类和甲壳类的重要栖息地。河流在维持如此丰富的生物多样性中的作用使其成为重要的自然资源，适合用于保护和生态旅游。游客通常会通过船只游览、观鸟和在附近的保护区徒步旅行来探索这条蜿蜒的河流。
文化上，卡鲁甘加是沿河地区当地社区的重要组成部分。许多村庄和城镇，包括卡鲁塔拉、拉特纳普拉和贝鲁瓦拉，依赖河流满足日常用水需求，还依赖其进行交通和渔业活动。河流还与宗教活动紧密相关，沿河岸的寺庙和文化节庆活动，凸显了它与该地区人民的深厚精神联系。
洪水风险与水文重要性
由于其重要的规模和多样的流域，卡鲁甘加需要定期监测以有效管理洪水风险。在中央山脉降雨量剧增期间，河流流量可能发生剧烈变化，这使得洪水管理成为周边社区和农业用地的重要问题。
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当前水文数据（官方报告）：
普图帕乌拉站 – 警报水平：3.00 米，轻微洪水水平：4.00 米，严重洪水水平：5.00 米，当前水平：2.92 米（正常）。
艾拉加瓦站 – 没有报告数据。 - 洪水易发地区：当上游流域的水位上升时，卡鲁塔拉、拉特纳普拉和贝鲁瓦拉地区易发生洪水，尤其是在西南季风期间。
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