All around the world, lakes are in trouble--with fish kills or toxic algae blooms. Usually, the culprit is excess nutrients washing into the lake. It's happening even at pristine lakes, long thought to be immune to these problems.
From time to time, I'll feature problems of lakes in a different parts of the world. The root cause is growing populations and affluence, plus the difficulty of managing thousands of small sources of nutrients.
Indian Kashmir used to be a place people compared to mythical Shangri-La--verdant and unspoiled. And Nigeen Lake (above), in a green valley surrounded by the Himalayas, is considered by waterways officials to the least polluted waterway in the city of Srinagar (population 1.3 million).
But a few days ago, there was a big fish kill on the lake. "The fisheries department has attributed the deaths to depletion of oxygen, fluctuation of temperature and flow of untreated sewage into the lake." Residents say they've never seen anything like this before. Source
Lake Nigeen is about the same size as Hawksnest. There are extensive wetlands nearby.