USGS Water-Year Summary for Site 03400800

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	Available Parameters
	00010 Temperature, water(Mean)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Mean)
	00300 Dissolved oxygen(Mean)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

03400800 MARTINS FORK NEAR SMITH, KY

LOCATION - Lat 36°45'08", long 83°15'27" referenced to North American Datum of 1927, Harlan County, KY, Hydrologic Unit 05130101, on left bank 150 ft downstream from State Highway 987 bridge, 0.3 mi downstream from Martins Fork Dam, 0.7 mi downstream from Crane Creek, 1.0 mi north of Smith, and at mile 15.3.

DRAINAGE AREA - 55.8 mi².

SURFACE-WATER RECORDS

PERIOD OF RECORD - Occasional low-flow measurements, water years 1968-71, and annual maximums, water years 1968-70. April 1971 to Sept. 30, 2004 (discontinued). Resumed operation Jan. 1, 2015 to present as stage/discharge site.

GAGE - Water-stage recorder. Datum of gage is 1,259.00 ft above NGVD of 1929. July 25, 1967 to Apr. 9, 1971, crest-stage gage at site 30 ft downstream at same datum, and Apr. 10, 1971 to Sept. 30, 1977, water-stage recorder at site 0.8 mi downstream at same datum. Flow regulated by Martins Fork Dam.

REMARKS - Flow regulated since January 1979 by Martins Fork Lake, located 0.3 mile upstream of gage.

WATER-QUALITY RECORDS

PERIOD OF RECORD -

March 1987 - September 2006 Discontinued by Cooperator

June 2015 - Current

EXTREMES FOR PERIOD OF RECORD -

Extremes are since beginning of 2015 record when site was reestablished. Extremes are only from March 01 to Nov. 01 when USGS QW sensors are used.

WATER TEMPERATURE:

Maximum recorded: 31°C July 20, 2020 at 1445

Minimum recorded: 5.4°C Jan. 26, 2020 at 0600*

SPECIFIC CONDUCTANCE:

Maximum recorded: 194 µS/cm Oct. 10, 2016 at 1530

Minimum recorded: 79 µS/cm May 15, 2018 at 1530

pH:

Maximum recorded: x.x units

Minimum recorded: x.x units

DISSOLVED OXYGEN:

Maximum recorded: 12.2 mg/L on Feb. 27, 2016 *

Minimum recorded: 1.60 mg/L on Sep. 13, 2016 at 0330

* Multiple occurrences of the same extreme in selected dataset. First occurrence listed.