MARIIS Head Office
Minante I, Cauyan City, Isabela
Tele/Fax Number: (078) 307-0037
E-mail Address: mariis@nia.gov.ph
Engr. Gileu Michael O. Dimoloy - Department Manager A
MARIIS Division I
Batal, Santiago City, Isabela
Tele/Fax Number: (078) 324-7604 / (078) 324-5316
E-mail Address: mariis.division1@nia.gov.ph
Engr. Jaime Z. Ladiao - Division Manager
MARIIS Division II
San Mateo, Isabela
Tele/Fax Number: (078) 323-5642
E-mail Address: mariis.division2@nia.gov.ph
Engr. Ronnie B. Besa - Acting Division Manager
MARIIS Division III
San Manuel, Isabela
Tele/Fax Number:+63 9166804047
E-mail Address: mariis.division3@nia.gov.ph
Engr. Jaime M. Lara - Division Manager
MARIIS Division IV
Minante I, Cauayan City, Isabela
Tele/Fax Number: (078) 370-276
E-mail Address: mariis.division4@nia.gov.ph
Engr. Efren F. Robang - Division Manager
MARIIS Dam and Reservoir Division
Ambatali, Ramon, Isabela
Tele/Fax Number: (078) 260-3422
E-mail Address: mariis.drd@nia.gov.ph
Engr. Carlo C. Ablan - Division Manager