http://www.hcn.org These are the search results for the query, showing results 1 to 1. http://www.hcn.org/issues/44.16/can-pallid-sturgeon-hang-on-in-the-overworked-missouri-river/grand-canyon-floods-and-native-fish Scientists thought periodic, controlled floods in the Grand Canyon might help native fish. But so far, there's little evidence they have. No publisher Cally Carswell humpback chub Glen Canyon dam Colorado River native fish endangered species razorback sucker Grand Canyon floods 2012-09-13T15:07:14Z News Article