Errors in Argos satellite telemetry locations are likely if transmitter elevation is specified incorrectly, but often it is impossible to specify the correct elevation a priori. To enable ex post facto corrections, I developed a geometric model of directions (θ E ) and magnitudes (r E ) of elevation-induced satellite telemetry errors. In field tests, the model explained 96-100% of the variance in θ E (P 0.05) and precision (P > 0.43) of corrected locations did not differ from values expected in the absence of elevational error; still, some residual bias and imprecision were likely. Optimal performance is best ensured by specifying the correct transmitter elevation a priori. Where elevational errors do occur, however, the model presented here offers a tool for mitigating resulting location errors.