In hydrologic terms, streamflow which results from precipitation that infiltrates into the soil and eventually moves through the soil to the stream channel. This is also referred to as baseflow, or ground water flow.

flow in a combined or sanitary sewer that is not influenced by a rain storm or snowmelt.

When the sewage flow is mainly domestic in character, the average daily flow to the treatment works during seven consecutive days without rain following 7 days during which the rainfall did not exceed 0.25mm on any one day. Usually taken as 200 litres per head per day on domestic properties. (Note - this figure will vary according to your location and specialist help must be sought or see our table of loadings.)