Local assumed datum was changed on October 1st, 2022. Prior to change, data were published in elevation in National Geodetic Vertical Datum 1929 (NGVD29).

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Available data

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Continuous data

3 data types available - data from 2022-10-01 to 2026-08-17

Daily data

2 data types available - data from 2000-10-01 to 2026-08-16

Field measurements

3 data types available - data from 2000-12-08 to 2026-08-13

Discrete sample data

60 Observed properties (data types) available - with data from 1960-02-19 to 2001-08-07

36 Sampling activities

Peak measurements

1 data types available - with data from 2022-10-01 to 2025-06-21

Statistical tables for select daily data types

2 data types available - data from 2000-10-01 to 2026-08-16

Location details and information

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Operated in cooperation with:

US Army Corps of Engineers - St. Paul District

Metadata Element	Location Metadata	Metadata Code
Agency	U.S. Geological Survey	USGS
Location identification number	05057500	n/a
Location name	LAKE ASHTABULA AT BALDHILL DAM, ND	n/a
Site type	Lake, Reservoir, Impoundment	LK
Decimal latitude (WGS84)	47.036189	n/a
Decimal longitude (WGS84)	-98.081536	n/a
Latitude-longitude method	Interpolated from digital map	N
Latitude-longitude accuracy	Accurate to + or - .01 sec (Differentially-Corrected GPS).	H
District	North Dakota	38
State	North Dakota	38
County	Barnes County	003
Country	United States of America	n/a
Altitude of gage/land surface	1201.23 feet	n/a
Method altitude determined	GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System	X
Altitude accuracy	0.02 feet	n/a
Altitude datum	North American Vertical Datum of 1988	NAVD88
Subbasin hydrologic unit	Middle Sheyenne	09020203
Drainage basin		n/a
Date of first construction		n/a
Drainage area	3856 square miles	n/a
Contributing drainage area	1910 square miles	n/a
Time zone abbreviation	CST	n/a
Site honors Daylight Saving Time	Y	n/a
National aquifer		n/a
Local aquifer		n/a
Local aquifer type		n/a
Well depth		n/a
Hole depth		n/a
Source of depth data		n/a

Monitoring location Lake Ashtabula at Baldhill Dam, ND - USGS-05057500