Other Gases - Understanding Lake Data

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Under anaerobic conditions, hydrogen sulfide (H2S) and methane gas (CH4) may form and disperse into lake water from underlying sediments. Commonly referred to as "swamp gases," hydrogen sulfide and methane can be seen bubbling out when an oar pierces shallow, mucky sediments. Hydrogen sulfide (H2S) smells like rotten eggs and is toxic to fish.

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For more information on this topic, contact:

James Vennie
Watershed Management
(608) 266-2212


Lakes Partnership | Watershed Management | Fish Wisconsin | Fisheries Management

Last Revised: Thursday January 25 2007