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 1990-10-01 to 2026-09-21
Daily data
1 data types available - data from 1975-10-01 to 2026-09-20
Field measurements
2 data types available - data from 1975-09-25 to 2026-09-01
Discrete sample data
38 Observed properties (data types) available - data from 1970-07-12 to 1995-08-18
77 Sampling activities
Peak measurements
2 data types available - data from 1976-09-16 to 2025-05-31
Statistical tables for select daily data types
1 data types available - data from 1975-10-01 to 2026-09-20
Important information about this monitoring location
LOCATION.-- On right bank 0.5 mi downstream from bridge on Glen Arm Road, 0.6 mi upstream from State Highway 147 (Harford Road), 0.8 mi east of Glen Arm, and 1.6 mi upstream from mouth. PERIOD OF RECORD.-- October 1975 to current year. GAGE.-- Water-stage recorder and crest-stage gage. Datum of gage is 240.36 ft above North American Vertical Datum of 1988.
Monitoring locations with continuous data in last 120 days
No locations found
