Photo: Diane Edwardson, October 15, 2011. You won't be able to pull your boats out of the LA River on the Metrolink Railyard side of the river, just north of the Confluence. (Click on photo to enlarge.)
There are a lot of rules, directions & instructions involved with the LA River Recreation Zone pilot program approved by the City between the Fletcher Bridge & the Confluence (like, don't bring your dog within 5' of the flat part of the riverbed - guess that's sort of a half-assed compromise.)
Read more: Echo Park Patch
Link to Q&A, Recreation Zone Rules