Presence of Algae and Dissolved Oxygen Production in Seer Stream

Seer is the stream in outer Himalayas, which is a sub-tributary of River Satluj. It is getting polluted due to wastewater of Ghumarwin town in District Bilaspur in Himachal Pradesh. The pollution impact is severest in the low flow months of summer. Steep slopes, pools, riffles, shallow depth and small waterfalls are the main characteristics of the stream. The stream bed consists of stones and cobbles. All the stones in the stream bed are heavily coated with a greenish layer of algae. Greenish filamentous attached algae also grow in abundance in the stream. Some aquatic plants have also been observed in the stream. The paper describes the quantification of oxygen production due to the presence of attached algae in the stream.