Geismar, Louisiana is a small town located in Ascension Parish. The climate is humid subtropical, with hot summers and mild winters. The area is surrounded by waterways, including the Mississippi River, Bayou Lafourche, and the Amite River. Hydrology constituents in the area include nitrogen, phosphorus, and sediment, which can affect water quality. Outdoor recreation opportunities in Geismar include fishing and boating on the nearby waterways, as well as hiking and birdwatching in the nearby wetlands. The town is also home to several parks and playgrounds, providing a variety of recreational opportunities for residents and visitors alike.