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Water-Year Summary for Site 365645093431601

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Available Parameters
72019 Water level, depth LSD(Mean)  

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

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USGS Water-Year Summary 2023
365645093431601 Aurora
Ozark Plateaus aquifer system
Canadian Series
LOCATION - Lat 36°56'37.3", long 93°43'12.6" referenced to North American Datum of 1983, in SE 1/4 SE 1/4 sec.24, T.26 N., R.26 W., Lawrence County, MO, Hydrologic Unit 11070207,
REVISIONS HISTORY -
Revisions: Land-surface datum was revised to 1,470.54 ft NAVD88 on Oct. 4, 2023, as determined by a GNSS survey by Missouri DNR. Land-surface datum was previously published in error as 1,460 ft NAVD88 from topographic map. Discrete water-level measurements referenced to NGVD29 and NAVD88 were revised, based on changes to the land-surface datum.

The data from 11/17/1988 to 12/07/2009 was modified after it was set to 'Approved' status. A -3.0 ft measuring point height correction has been applied to this period of record to reference water level data to land surface instead of the measuring point which was referenced in the field. A spike on 09/05/2012 at 10:00:00 am CDT was added back to the dataset after it was previously deleted. The spike was likely due to a large earthquake in Costa Rica (7.6 magnitude on 09/05/2012 at 09:45:00 am).
GROUNDWATER RECORDS
DATUM - Land-surface datum is 1,470.54 ft above North American Vertical Datum of 1988. Measuring point: unknown, 3.0 ft above land-surface datum, Sep. 26, 1986 to present.  
PERIOD OF RECORD - November 17, 1988 to present.
GAGE - Stevens model A-35 chart recorder installed July 2, 1988. September 15, 2000 to present; DCP with float, encoder, and telemetry capability was installed as the water level recording device.
COOPERATION - Data furnished by Missouri Department of Natural Resources (MDNR)except for period November 17, 1988 to September 30, 1991 during which the data and record was furnished by USGS. The record from September 14, 2000 to present furnished by MDNR and USGS.
REMARKS - Furnished record rated good (November 17, 1988 to October 8, 1991) based on 27 available water level measurements that are generally within 0.3 ft of the daily value measurement. Data from October 9, 1991 to September 13, 2000 have been archived by Missouri Department of Natural Resources (MDNR) and are not available to verify the recorded data. Furnished record rated poor (October 9, 1991 to September 13, 2000) because no water level measurements are available to verify daily values. There were several abrupt jumps in the data that could be caused by the float getting hung. This cannot be verified and therefore is rated poor. Furnished record from MDNR rated good (September 14, 2000 to December 7, 2009) based on 29 water level measurements made during this period to verify recorded water levels which is generally with 0.2 ft of the measured water level. The record from 12/07/2009 to 12/21/2010 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 12/21/2010 to 09/14/2011 is good based on 4 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.05 ft. The record from 09/14/2011 to 07/25/2012 is good based on 2 water level measurements made during the period to verify the recorded data and is good to +/- 0.05 ft. The record from 07/26/2012 to 08/13/2013 is good based on 2 water level measurement made during the period to verify the recorded data and accurate to +/- 0.05 ft. The record from 08/14/2013 to 12/09/2014 is good based on 2 water level measurement made during the period to verify the recorded data and accurate to +/- 0.05 ft. The record from 12/10/2014 to 04/24/2016 is good based on 4 water level measurement made during the period to verify the recorded data and accurate to +/- 0.05 ft. The record from 04/25/2016 to 10/05/2016 is good based on 1 water level measurement made during the period to verify the recorded data and accurate to +/- 0.05 ft. The record from 10/06/2016 to 05/14/2018 is good based on 4 water level measurement made during the period to verify the recorded data and accurate to +/- 0.05 ft. The record from 05/15/2018 to 12/10/2018 is fair based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/-0.05 ft. The fair rating is due to many gaps in the data throughout the period due to malfunctioning equipment. The record from 12/11/2018 to 07/24/2019 is good based on 2 water level measurements made during the period to verify the recorded data and is accurate to +/- 0.10 ft. The record from 07/25/2019 to 01/13/2020 is good based on 1 water level measurement made during the period to verify the recorded data and is accurate to +/- 0.10 ft. 

All further remarks can be found in RMS as of 01/14/2020.