I once snorkled Lk solano and saw billions and billions of water boatmen and thousands of stickle back baitfish,both of which are in the slower areas of Putah creek itself.I also surveyed the entire length of Lk Solano with a pull net and canoe for mud snails with the same results except this time (about 1 year ago) I had quite a few mud snails in the mix.I have stomach sampled fish through-out Putah and rarely seen waterboatmen,although about 3 years ago hooked a massive Brown in the summer time in Lk Solano float tubing with a waterboatman pattern I created.