ACD has been out in the field, monitoring the water quality and water quantity of Anoka County's streams and rivers. Stream water quality monitoring is conducted to detect and diagnose water quality problems that impact the ecological integrity of waterways, recreation, and human health. Since many streams systems are connected to lakes, water quality in streams is often studied as part of lake management. Hydrology is the study of water quantity and movement. Knowledge regarding the amount of water flowing in a stream helps engineers and natural resource professionals understand the effects of rain events, land development, and stormwater management. This information is often paired with water quality monitoring and used to calculate pollutant loadings, which are used in computer models and water pollution regulatory determinations.