You can definitely ski all year with either a wetsuit or drysuit from maybe...December though March.
Lake Austin is great because it's right by the city. There are some fabulous houses on there and it's a constant level lake so the boat houses are basically in your back yard.
Farther out, you have Lake Travis and the Pedernales River. Much of the property there is more toward the suburban or rural side.
There are also a few smaller lakes around and others that are farther upstream (Austin, Travis, LBJ, Marble Falls, Inks, and Buchanan are all from dams on the Colorado River). Austin is I think about 30 miles long and Travis is 65 miles long with various arms.
I think there's also at least one man-made ski lake around here somewhere.
I don't know about Houston.
BTW, what is an Interactive Designer? Is that the same thing as an Interaction Designer? If it is and you are talking about the Cooper methodology, I have to give you a hard time about using the wrong terminology because it's one of my pet peeves as it usually (but not always) signifies a lack of understanding about the nature of the discipline. If not, nevermind!