Lake Chelan at Purple Point at Stehekin, WA - 12451200
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Continuous data
Lake Chelan at Purple Point at Stehekin, WA - 12451200
Subscribe to WaterAlert March 22, 2025 - March 29, 2025
Elevation of reservoir water surface above datum, feet
1086.46 ft - Mar 29, 2025 12:00:00 PM PDT
Important Data may be provisional
Value
Status
Time
Latest value
1086.46 ft
Provisional
Mar 29, 2025
12:00:00 PM PDT
Selected
1086.46 ft
Provisional
Mar 29, 2025
12:00:00 PM PDT
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Median
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Statistics for March 29, 2025 based on 6 years of data
Elevation of reservoir water surface above datum, ft
low (2023)
1084.68 ft
25th percentile
1084.7 ft
median
1085.31 ft
75th percentile
1088.37 ft
mean
1086.23 ft
high (2024)
1089.36 ft
Available data
Select data types to graph from categories based on the way the data were collected.
Learn about the data collection categories Continuous data
1 data types available - data from 2018-09-05 to 2025-03-29
Continuous data are collected via automated sensors installed at a monitoring location.
Data type
Data date range
Elevation of reservoir water surface above datum, feet
2018-09-05 - 2025-03-29
Daily data
1 data types available - data from 2018-09-05 to 2025-03-28
Field measurements
0 data types available
Discrete sample data
0 observed properties (data types) available
- Monitoring Location
- Active Monitoring Locations
5 km
3 mi
Leaflet USGS The National Map: National Boundaries Dataset, 3DEP Elevation Program, Geographic Names Information System, National Hydrography Dataset, National Land Cover Database, National Structures Dataset, and National Transportation Dataset; USGS Global Ecosystems; U.S. Census Bureau TIGER/Line data; USFS Road data; Natural Earth Data; U.S. Department of State HIU; NOAA National Centers for Environmental Information. Data refreshed February, 2025.
Interested in understanding how to access the upstream/downstream data? Learn about the Network-Linked Data Index (NLDI)
| USGS Parameter Group | Data Types | Start Date | End Date |
|---|---|---|---|
| Physical | Daily Values, Unit Values | 2018-09-05 | 2025-03-29 |
| n/a | USGS Annual Water Data Reports Site | 2018-01-01 | 2024-01-01 |
Monitoring location 12451200 is associated with a Lake, Reservoir, Impoundment in Chelan County, Washington. Current conditions of Elevation of reservoir water surface above datum are available. Water data back to 2018 are available online.
The datum of the gage has been determined to be 2.54 ft above NAVD of 1988. To obtain stream water-surface elevation values in NAVD of 1988, add 2.54 ft to gage height values.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
12451200 | n/a |
|
Site name
|
LAKE CHELAN AT PURPLE POINT AT STEHEKIN, WA | n/a |
|
Site type
|
Lake, Reservoir, Impoundment
|
LK |
| DMS latitude | 481822 | n/a |
| DMS longitude | 1203911 | n/a |
| Decimal latitude | 48.3059699 | n/a |
| Decimal longitude | -120.6542655 | n/a |
|
Latitude-longitude method
|
Interpolated from MAP. | M |
|
Latitude-longitude accuracy
|
Accurate to + or - 1 sec. | S |
|
Latitude-longitude datum
|
North American Datum of 1927 | NAD27 |
| Decimal Latitude-longitude datum | North American Datum of 1983 | NAD83 |
|
District
|
Washington | 53 |
|
State
|
Washington | 53 |
|
County
|
Chelan County | 007 |
| Country | US | n/a |
| Land net location description | NENWS06 T32N R18E W | n/a |
| Name of location map | n/a | |
| Scale of location map | n/a | |
| Altitude of Gage/land surface | 2.54 feet | n/a |
| Method altitude determined | GNSS2 - Level 2 Quality Survey Grade Global Navigation Satellite System | X |
| Altitude accuracy | .12 feet | n/a |
|
Altitude datum
|
North American Vertical Datum of 1988 | NAVD88 |
|
Subbasin hydrologic unit
|
Lake Chelan | 17020009 |
|
Drainage basin
|
n/a | |
|
Topographic setting
|
n/a | |
| Flags for instruments at site | NNNNYNNNNNNNNNNNNNNNNNNNNNNNNN | n/a |
|
Date of first construction
|
n/a | |
| Date site established or inventoried | n/a | |
|
Drainage area
|
924 square miles | n/a |
| Contributing drainage area | n/a | |
| Time Zone abbreviation | PST | n/a |
|
Site honors Daylight Saving Time
|
Y | n/a |
|
Data reliability
|
n/a | |
| Data-other GW files | NNNNNNNN | 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 | |
| Project number | n/a |
