We can launch our big boats at only 1 of the 4 River lakes we fish, the water is so low the ramps are 3 ft out of the water at the other 3

but we can always launch the 12ftr since we don't need a ramp

Amistad is so low the Diablo east ramp is down to one lane to launch. There are islands just under the surface 200 yards out from shore

extreme care is needed when running Amistad so keep your eyes peeled for islands and your head on a swivel
Side note: we fished Amistad until 2AM last night, needless to say it was a long slow boat ride back to the ramp in the dark