This paper describes the derivation of a critical heat flux (CHF) lookup table, which may be used for predicting CHF for water over a very wide range of conditions. The CHF table is based on the Chalk River Nuclear Laboratories' CHF data bank, which contains more than 15.000 CHF data points for water. A comparison of the prediction accuracy of the CHF lookup table and selected CHF correlations is presented. The table method is not designed to replace ad hoc CHF correlations derived for a given geometry over a narrow range of flow conditions; rather it is designed to provide a reasonable estimate of CHF over a very wide range of flow conditions and geometries, especially over the ranges where CHF data are scarce. It may also be used to predict CHF for nonaqueous fluids by fluid-to-fluid modeling techniques