Like BigCliff said. Hurry. Even aside from the drought, late this month the "tuber" season commences, which makes fly-fishing tough if you have any sort of temper. Don't know exactly what your six-month stay here will be, but the Guad season really starts in late November and starts petering out in late April most years. The river is stocked not only by Texas State Wildlife, but more importantly by the Guadalupe Chapter of Trout Unlimited (GRTU), who stock some major-sized trout and generally take care of this tailwater. Most years there is substantial carry-over of trout, thanks to a water release agreement that the GRTU negotiated with the various Federal and State agencies having jurisdiction, but as BigCliff said, the 100-year drought we're beginning to look at this year will probably severely impact the Guad this summer. Nevertheless, it's worth looking into, as there is no other trout water remotely close to Houston. Regardless of how severe the summer turns out to be, there will be substantial re-stocking in the late fall.
The GRTU's forum is www.grtu.org • Index page
, in case you're interested. Note that the Chapter has a separate "lease" section for an optional membership that includes access to a dozen or so special access points that GRTU leases each fall.