Hi, In relation to obstacles, I encountered that WAsP, at this time, does not allow for a circular geometric shape. The wind monitoring campaign was conducted at the site where there is a circular water tank. At this site, measurement of wind speed and direction were done at 10 m and 40 m, respectively. The closest point between this water thank and the wind mast was about 45 m. Additionally, the estimated height of the water tank is 6 m and a diameter of about 30 m. In consideration of WAsP, how can I develop an obstacle map in WAsP, with minimal error, to reflect the presence of a circular water tank, as described in the above? Thank you. D.Bachai