USGS Water-Year Summary for Site 01589485

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	Available Parameters
	00010 Temperature, water(Max.,Mean,Min.)
	00065 Gage height(Tid.,Tid.)
	00095 Specific cond at 25C(Max.,Mean,Min.)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00300 Dissolved oxygen(Mean,Min.,Max.)
	00300 Dissolved oxygen(Mean,Min.,Max.)
	72137 Discharge,tide fltrd(Mean)
	99133 NO3+NO2,water,insitu(Mean,Max.,Min.)

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

01589485 JONES FALLS AT MOUTH AT BALTIMORE, MD

LOCATION - Lat 39°17'02.8", long 76°36'13.1" referenced to North American Datum of 1983, Baltimore City, MD, Hydrologic Unit 02060003, on left bank, 370 ft downstream of Eastern Avenue, and 30 ft downstream of walking bridge from Fleet St to Pier 6 at Baltimore Inner Harbor.

DRAINAGE AREA - 57.5 mi².

REVISIONS HISTORY - https://waterdata.usgs.gov/nwis/dv/?site_no=01589485: 2017-2019.

SURFACE-WATER RECORDS

PERIOD OF RECORD - February 2017 to April 2017 (stage only); April 2017 to current year.

GAGE - Water-stage recorder and velocity meter. Datum of gage is 0.00 ft above North American Vertical Datum of 1988.

REMARKS -

Water Years 2017-2019: Records poor, including those for estimated discharges.

This is a tidal discharge station. Discharge is computed from relations between stage vs. area and index velocity vs. mean channel velocity. U.S. Geological Survey water-data telemeter at station.

EXTREMES FOR PERIOD OF RECORD - Maximum gage height, 3.40 ft, Oct 12, 2019; minimum gage height, -5.04 ft, March 3, 2018. Maximum discharge, 7,660 ft³/s, July 27, 2018; minimum discharge, -702 ft³/s, August 31, 2017.

WATER-QUALITY RECORDS

PERIOD OF RECORD - All parameters begin February 15, 2017. The station was discontinued on 01/02/2020. All CQW parameters were discontinued on 01/02/2020 with exception to:

SC Lower sonde: discontinued on 10/09/18

TBY Lower sonde: discontinued on 10/09/18

pH Lower sonde: discontinued on 10/09/18

NO3: discontinued on 10/09/18

INSTRUMENTATION -

Water Quality Data, water velocity and gauge height are logged on a Campbell Scientific CR1000 data logger and transmitted every hour via Raven Modem. Power for all components is provided solely by a bank of 10 large 12V batteries. Data collection, logging and transmission will cease at a voltage of 11.5 V; the electronics are programmed to shut down to avoid low-voltage damage.

Two Sub-Locations at site:

"Upper" Sub-Location: Instrumentation is suspended beneath a floating platform (rises and lowers with the water surface) measures water quality 0.8 ft below water surface. EXO sonde (temperature, specific conductance, pH, dissolved oxygen, turbidity) reports values every five minutes, starting on the five minute mark. A stand-alone SUNA Nitrate probe reports values every 15 minutes on the quarter-hour. See image 1558 and 1563 for details: \\IGSACNEWUSSUNMD\anrpt\Data_Archive\01589485\Images\20170215.Electronics Installation and Sonde Deployment

"Lower" Sub-Location: Instrumentation is hung in a PVC tube (conventional deployment) at a fixed height above the stream bed measures water quality 12 ft below top of channel wall (or 14 ft below top of PVC tube, which suspends sonde approximately 1 foot above stream bed.) EXO sonde (temperature, specific conductance, pH, dissolved oxygen, turbidity) reports values every five minutes, starting on the five minute mark.

EXTREMES FOR PERIOD OF DAILY RECORD -

Upper Sub-Location:

WATER TEMPERATURE: Maximum, 29.7 °C, July 17, 2017; minimum, 0.2°C, on Jan. 5, 2018.

SPECIFIC CONDUCTANCE: Maximum, 13,300 microsiemens per centimeter, Sept. 30, 2017; minimum, 49 microsiemens per centimeter, July 27, 2017*.

pH: Maximum, 8.9 standard units, Aug. 12, 2017; minimum, 5.3 standard units, Jan. 28, 2018.

DISSOLVED OXYGEN: Maximum, 15.3 milligrams per liter, Jan. 22, 2019*; minimum, 3.6 milligrams per liter, July 14, 2017*.

TURBIDITY: Maximum, 597 formazin nephelometric units (FNU), May 10, 2019; minimum, 0.0 formazin nephelometric units (FNU) July 28, 2019*.

*Multiple occurrences of the same extreme, first occurrence listed

NITRATE PLUS NITRITE IN SITU: Maximum 2.19 mg/l as N, October 4, 2018; minimum, 0.03 mg/l as N, October 12, 2017.

LOWER Sub-Location:

WATER TEMPERATURE: Maximum, 30.3 °C, July 4, 2018*; minimum, 0.7 °C, on Jan. 17, 2018*.

SPECIFIC CONDUCTANCE: Maximum, 27400 microsiemens per centimeter, Mar. 24, 2018*; minimum, 49 microsiemens per centimeter, Aug. 13, 2018.

pH: Maximum, 9.2 standard units, May 19, 2017; minimum, 6.8 standard units, May 15, 2017*.

DISSOLVED OXYGEN: Maximum, 20.2 milligrams per liter, Feb 05, 2019; minimum, 0.0 milligrams per liter, August 04, 2019*.

TURBIDITY: Maximum, 1230 formazin nephelometric units (FNU), Jul. 22, 2018; minimum, 0.4 formazin nephelometric units (FNU) Oct. 04, 2017*.

*Multiple occurrences of the same extreme, first occurrence listed