👉 In the context of hydrology, a "speedwell" is a water body that has a significant impact on local hydrological processes and can be used to study the flow patterns within it. These wetlands are often found in coastal areas, where they are typically characterized by low water levels and high salinity. The term "speedwell" is commonly used to describe these wetlands as they play an important role in regulating water flow and sedimentation in coastal ecosystems.