Avera Holy Family Hospital (Estherville, Iowa). Located in the Des Moines River valley in Northwest Iowa, Avera Holy Family Hospital was established in 1944. In 2015, iVantage Health Analytics recognized Avera Holy Family Hospital as both a HealthStrong Top Hospital and a Top 100 Critical Access Hospital. The hospital also earned a five-star rating on its HCAHPS survey, one of just 251 hospitals nationwide to do so.