USGS Water-Year Summary for Site 01642199

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	Available Parameters
	00010 Temperature, water(Min.,Max.,Mean) [Discontinued]
	00060 Discharge(Mean) [Discontinued]
	00095 Specific cond at 25C(Min.,Max.,Mean) [Discontinued]

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

01642199 CARROLL CREEK ABOVE ROCK CREEK AT FREDERICK, MD

LOCATION - Lat 39°25'27.9", long 77°25'47.2" referenced to North American Datum of 1983, Frederick County, MD, Hydrologic Unit 02070009, on left bank 375 ft upstream from culvert on US Route 15 (Frederick Freeway), 1.1 mi northwest of Frederick, and 325 ft upstream of Rock Creek.

DRAINAGE AREA - 7.33 mi². , from automated delineation using 30-meter National Elevation Dataset, digital elevation model data, dated December 2011.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 2017 to March 2025.

GAGE - Water-stage recorder and crest stage gage. Datum of gage is 291.33 ft above North American Vertical Datum of 1988.

REMARKS -

Water Year 2025: Records fair, except those above 400 ft³/s and those for estimated discharges, which are poor.

Water Year 2024: Records good, except those for those after 06/05/2024, those above 400 ft³/s and those for estimated discharges, which are poor.

Water Year 2023: Records good, except those for 10/01/2022-11/02/2022, which are fair, and those above 400 ft³/s and those for estimated discharges, which are poor.

Water Year 2022: Records good. No estimated discharges.

Water Year 2021: Records good, except those above 350 ft³/s, and those for estimated discharges, which are poor.

Water Year 2020: Records good, except those above 350 ft³/s, which are poor. No estimated discharges.

Water Years 2018-2019: Records good, except those above 350 ft³/s, and those for estimated discharges, which are poor.

U.S. Geological Survey satellite data-collection platform at station.

WATER-QUALITY RECORDS

PERIOD OF RECORD - October 2017 to March 2025.

PERIOD OF DAILY RECORD - October 2017 to March 2025.

INSTRUMENTATION - Multi-parameter water quality monitor, October 2017 to March 2025.

REMARKS - Missing record due to periodic instrument malfunction or times when the sensor is being calibrated.

EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum 28.6°C, August 13, 2021*; Minimum, 1.8°C, Jan. 5, 2018*. SPECIFIC CONDUCTANCE: Maximum, 7,080 microsiemens/cm, February 7, 2018; Minimum: 52.82 uS/cm, recorded on 2023-09-07 at 14:05:00 EST