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Water-Year Summary for Site 02105769

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Available Parameters
00045 Precipitation(Sum)  
00060 Discharge(Max.,Min.,Mean)  
00065 Gage height(Max.,Min.,Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
02105769 CAPE FEAR RIVER AT LOCK 1 NEAR KELLY, NC
LOCATION - Lat 34°24'16", long 78°17'37" referenced to North American Datum of 1983, Bladen County, NC, Hydrologic Unit 03030005, on right bank near upstream end of Lock 1, 1.3 mi upstream from Natmore Creek, 2.0 mi upstream from bridge on North Carolina Highway 11, 4.6 mi southeast of Kelly, and at river mile 67.
DRAINAGE AREA - 5,255 mi².
REVISIONS HISTORY -

WDR NC-81-1: Drainage area.

The station name was changed on June 13, 2023, which was originally CAPE FEAR R AT LOCK #1 NR KELLY, NC. 

SURFACE-WATER RECORDS
PERIOD OF RECORD - July 1969 to current year.
GAGE - Water-stage recorder with concrete lock and dam control. The datum of the gage is 4.0 ft below NAVD88 NAD83(2011) Geoid 12B. Satellite telemetry at streamgage.
Historical: Datum of gage is 2.90 ft above NGVD of 1929. 
REMARKS - Slight regulation at high flow December 1972 to August 1981, caused by storage in B. Everett Jordan Lake. Flow regulated since September 1981 by B. Everett Jordan Lake (station 02098197). Slight diurnal fluctuation and some regulation for short periods at low flow caused by power plants upstream from station. Gage-height records are generally good. Discharge records are generally good except for estimated discharges, which are poor.  Additional details on the accuracy of the records can be obtained by contacting the USGS South Atlantic Water Science Center at gs-w-nc_nwisweb_data_inquiries@usgs.gov.
EXTREMES FOR PERIOD OF RECORD -

Extremes for Period of Regulation: Maximum discharge: 76,700 ft³/s, September 21, 2018; gage height: 30.68ft.

EXTREMES FOR PERIOD PRIOR TO REGULATION - Prior to regulation, maximum discharge: 57,000 ft³/s, March 3, 1979; gage height: 24.92 ft, from floodmarks. Minimum discharge prior to regulation, 406 ft³/s, July 1, 1981.
CLIMATOLOGICAL RECORDS
PERIOD OF RECORD - November 1998 to current year. Records from November 1998 to September 1999 are unpublished and available from the USGS Water Science Center, Raleigh, NC.
INSTRUMENTATION - Tipping-bucket raingage. Satellite telemetry at station.
REMARKS - Precipitation data collected during freezing periods may not be accurately reflected in daily record.
WATER-QUALITY RECORDS
EXTREMES FOR PERIOD OF RECORD -

Top Temperature: Maximum 33.5 C, August 21, 2023 ; Minimum 12.0 C, December 1, 2023

Bottom Temperature: Maximum 31.9 C, August 18, 2023 ; Minimum 12.0 C, December 1, 2023

Top pH: Maximum 9.1 standard units, June 17, 2023 ; Minimum 6.4 standard units, July 19, 2023 and several other days 

Bottom pH: Maximum 8.0 standard units, June 16, 17, 2023 ; Minimum 6.2 standard units, July 19, 2023 and several other days

Top Dissolved Oxygen: Maximum 13.4 mg/L, June 17, 2023 ; Minimum 4.0 mg/L, September 9, 2023

Bottom Dissolved Oxygen: Maximum 11.8 mg/L, June 17, 2023 ; Minimum 3.8 mg/L, September 9, 10, 2023

Top Chlorophyll a: Maximum 12.3 rfu, August 29, 2023 ; Minimum 0.5 rfu, May 11, 2023 and many other days

Bottom Chlorophyll a: Maximum 7.9 rfu, August 29, 2023 ; Minimum 0.5 rfu, May 13, 2023 and many other days.

Top Phycocyanin: Maximum 1.92 rfu, August 29, 2023 ; Minimum 0.00 rfu, July 23, August 23, 23, 23 

Bottom Phycocyanin: Maximum 1.14 rfu, August 29, 2023 ; Minimum 0.01 rfu, July 3, 2023 and several other days.