The decision was reached in closed session by the City Council on Nov. 24.
Kenline had previously been working as a member of the La Puente management team. She has previously held positions in Indio, Colton, San Bernardino and Riverside.
Kenline replaces Interim City Manager Frank Tripepi who took over when Carol Crowley retired from the position in Sept. 2008.
She will earn an annual salary of $160,000.