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 1982-12-16 to 2026-09-11
Daily data
1 data types available - data from 1982-10-01 to 2026-09-09
Field measurements
2 data types available - data from 1956-06-05 to 2026-07-30
Discrete sample data
38 Observed properties (data types) available - with data from 1983-03-31 to 1995-08-18
36 Sampling activities
Peak measurements
2 data types available - with data from 1956-07-21 to 2025-07-31
Statistical tables for select daily data types
1 data types available - data from 1982-10-01 to 2026-09-09
Important information about this monitoring location
LOCATION.--On left bank of bridge on Maryland Route 45 (York Road) at Cockeysville, and 0.45 mi upstream from mouth
PERIOD OF RECORD.--October 1982 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 239.70 ft above North American Vertical Datum of 1988. Previously operated as a low-flow partial-record station during water years 1955-59 and 1962-64 at same site. Dec. 15, 1982 to June 15, 1993, water-stage recorder 600 ft downstream and 50 ft upstream from bridge on Beaverdam Run Lane at gage datum 238.29 ft above North American Vertical Datum of 1988.
REMARKS.--Water-quality records for some prior periods have been collected at this location.
PERIOD OF RECORD.--October 1982 to current year.
GAGE.--Water-stage recorder and crest-stage gage. Datum of gage is 239.70 ft above North American Vertical Datum of 1988. Previously operated as a low-flow partial-record station during water years 1955-59 and 1962-64 at same site. Dec. 15, 1982 to June 15, 1993, water-stage recorder 600 ft downstream and 50 ft upstream from bridge on Beaverdam Run Lane at gage datum 238.29 ft above North American Vertical Datum of 1988.
REMARKS.--Water-quality records for some prior periods have been collected at this location.
Monitoring locations with continuous data in last 120 days
No locations found
