$99.00 Out of stock Category: Courses Related products Advanced Raven Course $449.00 Add to cart Introduction to Hydraulic Modelling with Blackbird $299.00 Read more Raven Management Workshop (Online, August 28 & September 4, 2026) $1,100.00 Read more Getting Started with Raven: A Free Introduction to Hydrologic Modelling $0.00 Add to cart By Brian Peng2025-10-03Leave a Comment on QGIS for Beginners: Hydrology & Water Resources Applications