Using QGIS and Adobe Photoshop To Create Hydrological Maps

In 2020, I decided to open an Etsy shop selling some of my digital art, specifically hydrological maps. Over the last couple of years, this hobby has grown into a part-time business that has become a solid source of extra cash. Building my little business has taken a lot of work. In addition to learning … Read more

Categories GIS

Cowan’s Method

The Manning’s roughness coefficient, which is also commonly referred to as Manning’s n, is an empirical parameter that represents energy loss due to a variety of things such as friction losses, flow separation, turbulence, and very sudden contractions or expansions. Manning’s n values are applied to Manning’s equation, which calculates open channel flow. There are … Read more

ArcGIS versus QGIS

ArcGIS and QGIS are Geographic Information System (GIS) software programs developed to store, manage, and display geospatial data. GIS software allows you to perform analyses and generate maps. For many water resources professionals, GIS is a significant part of their professional lives. In the United States, most water resources professionals use the Environmental Systems Research … Read more

Categories GIS

What is Flow Attenuation?

I have heard the term “attenuation” thrown around throughout my career. However, it took me a long time to actually understand what the term means. It turns out that flow attenuation is actually a fairly simple concept. In summary, attenuation of flow refers to any means by which peak flow is reduced. Therefore, the attenuation … Read more

Steady Versus Unsteady Flow Modeling

As a water resources engineer, many of the hydraulic models you prepare will be steady flow. This is because steady flow models are simpler and require less time to prepare. In many instances, this is appropriate. However, there are times when a more computationally sophisticated model is required to represent the physical processes that occur … Read more

Why Rainwater Harvesting Is Important

Humans have been capturing and storing rainwater for a very long time. However, the practice of rainwater harvesting is not very common in modern times because we have a network of pumps, wells, and treatment plants that transport clean drinking water to our taps. In general, many of us (in the United States) are fortunate … Read more