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ACD conducts stream hydrology monitoring on streams, rivers, and ditches throughout the county. Hydrology is the study of water quantity and movements. Data of how much water is flowing in a stream helps engineers and natural resource managers better understand the effects of rain events, land development and storm water management. The data is used for flood prediction, engineering solutions to flooding problems, calculating pollutant loadings in streams, and computer modeling.

Most of our stream hydrology monitoring is done with Orpheus Mini dataloggers from OTT Hydromet, that record water levels continiously every 15-minutes, and are downloaded periodically throughout the seaosn. Equipment is deployed during the open water season. Each year we survey the gauges so the readings correspond to sea level elevations. At some sites, we have determined rating curves (mathematical relationship between the water level and flow), which allows us to estimate flow from the water level data.

To view or download raw data about a particular stream from this website, use our Data Access tool.

ACD Contact : This email address is being protected from spambots. You need JavaScript enabled to view it. 763-434-2030 x110


Stream Hydrology Monitoring Methods

USGS - Rum River Real-Time Hydrology

USGS - Mississippi River Real-Time Hydrology