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An Exact Solution of the 2D Boussinesq Equation for the Three‐Point Method

I present an extension of the standard three-point method often used in hydrology (e.g., Beljin et al. 2014). My extension is based on a closed-form solution of the two dimensional steady-state Boussinesq equation. The technique allows evaluation of hydraulic gradients, horizontal components of the specific discharge, and the flow volume budget.