Begin by describing the geographical location of the waterfall you visited, its history and whether there are any other waterfalls in the vicinity. Knowing where it's located and how to get there is important to others who may want to experience it.
Research the waterfall to see if you can find and describe a particular geological event or condition that led to the formation of the waterfall. Earthquakes, volcanoes, landslides and mudslides can change the course of a river and create a waterfall. Waterfalls have been formed along fault lines and along edges of glacial troughs after glaciers have receded.
Determine and describe what type of a waterfall it is classified as. For example, Niagara Falls is known as a block waterfall because the water descends from a very wide point in the river. A plunge waterfall is one where the water touches nothing between the top of the waterfall and where the water lands. A tiered waterfall drops in a series of steps or rocky tiers on its way to the bottom. A fan waterfall begins narrow and then widens into a fan shape as it stays in contact with the bedrock on the way down.
State the height of the waterfall and approximately how many cubic feet of water per second or minute flow over it.
Detail what the waterfall looked like from an aesthetic perspective and what emotions you felt witnessing it. Although purely subjective, it gives others a clear idea of what the experience was like for you. Describe the waterfall itself, the surrounding landscape, the sound of the water crashing down, the scent and the feeling of mist on your face. Be creative in your description and take full advantage of the language. Many words can be used to describe a beautiful waterfall; spectacular, breath-taking, awe-inspiring, majestic, cascading, thunderous, relaxing, soothing, comforting, calming or serene.