Water collects in a ditch south of Chugach Way on April 20 in Anchorage. The area is within the historic Fish Creek watershed. (Loren Holmes / ADN) An Anchorage group wants the city to take a closer look at reviving a creek that once flowed through town by “daylighting” the waterway. During decades of development in Midtown Anchorage, Fish Creek was partially routed into underground drainage pipes. Now, a group called Friends of Fish Creek is advocating for the upstream section to flow again at the surface. Everyone seems to acknowledge that bringing the creek into the open won’t be easy. But advocates say such a move will transform the…