And idea what are the plans for the drainage ditch? It could be a chance to "daylight" a longer segment of that little waterway, inviting more wildlife and extending the pretty part of Starkweather in new directions.
I've noticed quite a range of native plants along the ditch -- sumac and elderberries being some of the more obvious. They probably weren't put there deliberately by people, so they could be remnants of the pre-settlement vegetation, same as railroad rights-of-way tend to contain pre-settlement remnants. If so, they would appropriately be considered an enhancement to the larger Starkweather Creek nature area..
I've contacted the Engineering department with these questions and if I learn anything of interest I'll follow up here.