The Dobbins Island case embodies more than just building a home, or a pier.

It's about the quality of the Magothy River, the health of the crabs, fish and grasses within it, and about the Bay's future.

This week, Anne Arundel County's Board of Appeals decided that neither the Chesapeake Bay Foundation nor the Magothy River Association had the right to challenge its decision to allow construction of a pier, driveway, well and septic system on the Magothy River's Dobbins Island, one of the last vacant islands in Maryland.

The county said the organizations do not have the right to challenge because they do not own property...