In the given paper we investigate the problem of constructing continuous and unsteady mathematical models, to determine the volumes of current stock of divisible productions, in one or several interconnected warehouses using the apparatus of mathematical physics and continuum principle. It is assumed that production distribution and replenishment is continuous. The constructed models are stochastic, and have dierent levels of complexity, adequacy and application potential. The simple model is constructed using the theory of ODE, for construction of more complex models the theory of PDE is applied. Also using additional conditions for the finite-differenced model for determination of random volume of divisible homogeneous production is constructed, and this nite dierenced mathematical model makes it possible to determine one of the possible trajectories of the random quantity. All constructed models can be used for on-line monitoring of the dynamics of the random productions volumes.