The three lowest potential energy surfaces of the Cl...H2O cluster, relevant 
for the study of the dynamics following electron photodetachment in the
Cl-(H2O)n complexes, are presented. An ab initio Fock-space multireference
coupled cluster scan of the three lowest Cl...H2O potentials is performed
and followed by a diatomics-in-molecule fit of a near-quantitative accuracy,
suitable for dynamical calculations.