Hydraflow Express Extension Hydraflow Express Extension for AutoCAD® Civil 3D® provides flexible calculators to help solve a wide variety of everyday hydraulics and hydrology problems for culverts, open channels, inlets, hydrology, and weirs. Just select the task you want from a toolbar, fill in the blanks in the simple interface, and calculate your solution. The Hydraflow Express stormwater software extension produces informative graphs, rating curves, and professional, easy-to-read reports. |