The Eco-Index, an online database of conservation projects in the Americas, has been online since 2001. But it recently hit a milestone of 1,000 projects, and as recently started including projects in the US and Canada. You can check it out at http://www.eco-index.org/new/index.cfm.
You can do a simple keyword search from the front page, or you can do a more extensive search that allows you to search by country, category, keyword, etc. I did a search just for the US and found 24 projects underway, from Atlantic and Gulf of Mexico Rapid Reef Assessment to Reducing Agricultural Threats in the Meso-American Reef Ecoregion.
The list of projects, which is in alphabetical order, includes a title, brief description, responsible organizations (usually multiple) and relevant categories. Clicking on the title of the project will give you a detail page including participating countries, date started, contact information, relevant Web sites (if any), project objectives, budget, etc. You know what I’d love to see here? — and I don’t even know if it’s feasible — a blog for each project. Or very overt links to progress reports. One project, for example, has field reports, but a link to these reports is not front-and-center on the project’s detail page.