tree strainer on Rio Grande
The upper Rio Grande Box in Colorado (NOT NEW MEXICO) below the RIo Grande Resivoir has an almost river wide strainer about half way down the run. There is a route around it on far river right, however a rock blocks easy passage through and rafts will probably have to be lined. It can be taken out pretty easily with a chain saw or cum-along as it's not an imposingly large tree. Kayaks should be able to navigate around if extrem care is taken.