Association of State Wetland Managers - Protecting the Nation's Wetlands.

Category Archives: Wetland Mapping

By Marla J. Stelk, Policy Analyst, ASWM The National Wetlands Inventory (NWI) data layer has been and continues to be a primary building block for many geographic mapping projects and decision support systems used by Federal, State, and local agencies, … Continue reading

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By Jeanne Christie 2015 is the 40th anniversary of the National Wetlands Inventory.  It is one of the largest databases of its kind in the world with over 20 million polygons of individual wetlands in the United States.  It gets … Continue reading

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It is not easy to map wetlands.  It requires good remote imagery as well as trained wetland mappers.  The imagery is expensive and the training is intensive.  But now there is the opportunity to learn the basics about wetland mapping … Continue reading

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Over the past year the Association of State Wetland Managers has been talking to people around the country about wetland mapping as part of pulling together a status report on new wetland mapping projects. What we’ve learned is that wetland … Continue reading

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What is a wetland?  It seems like a simple question. The U.S. Army Corps of Engineers defines wetlands as “those areas that are inundated or saturated at a frequency and duration sufficient to support, and that under normal circumstances do … Continue reading

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Sometimes when one thing gets done, then another action is needed, then another, then another.  For example when a room gets a new carpet and then suddenly the wall color and curtains need to be replaced as well. This happened … Continue reading

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As 2009 wound to a close last week, the annual deluge of the ‘year in review stories’ was shared on TV broadcasts, newspapers, radio, magazines and news outlets.  Last week I shared the top five news stories that made headlines … Continue reading

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Earth Snapshot EOSnap is a web portal dedicated to Earth Observation. Check out other featured areas of the globe – the Coast Mountains (CAN & USA), wetlands of Africa, the Middle East, Deltas and Wetlands of the Caspian Sea, at this … Continue reading

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One of the joys of working for the Association of State Wetland Managers is watching new, important initiatives unfold. In 2005 the principal topic for ASWM’s annual state/federal workshop was wetland mapping. At the end of the meeting the U.S. … Continue reading

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