Important Legacy real-time page
Available data
Select data types to graph from categories based on the way the data were collected.
Learn about the data collection categories Continuous data
3 data types available - data from 1984-03-28 to 2026-09-02
Daily data
1 data types available - data from 1944-06-01 to 2026-09-01
Field measurements
2 data types available - data from 1944-05-12 to 2026-08-03
Discrete sample data
44 Observed properties (data types) available - with data from 1954-12-08 to 1987-10-13
30 Sampling activities
Peak measurements
2 data types available - with data from 1933-08-01 to 2025-07-15
Statistical tables for select daily data types
1 data types available - data from 1944-06-01 to 2026-09-01
Important information about this monitoring location
LOCATION.--On left bank 300 ft upstream from bridge on State Highway 648, 0.25 mi southeast of Interstate Highway 97, and 0.5 mi northwest of Glen Burnie. PERIOD OF RECORD.-- May 1944 to September 1952. Annual maximum, water years 1965-70. September 1983 to current year. GAGE.-- Water-stage recorder, crest-stage gage and concrete control. Datum of gage is 24.91 ft above North American Vertical Datum of 1988. REMARKS.--Low flow affected by groundwater diversions from Anne Arundel County municipal well fields upstream from station; spring and summer periods affected by discharge and withdrawal from unknown source. EXTREMES OUTSIDE PERIOD OF RECORD.-- Flood of August 1933 reached a stage of about 4 ft.
Monitoring locations with continuous data in last 120 days
No locations found
