A large number of women overall, and an unusual number of working moms on the faculty makes for a relatively supportive environment for women within academia. One caveat: there are fewer women faculty members, and in particular working moms, among the senior faculty. But there is hope for this to change within the next few years (e.g. a large number of women who should receive tenure in the next 3 or so years).

Good place to be, in general. however, be sure to know specifics about your direct supervisor, as they have a lot of leverage and power to change the culture.

Some departments are more accommodating than others. Student Affairs division is great.