Sammamish Lake Near Redmond, WA - 12122000
Scale
Continuous data
Sammamish Lake Near Redmond, WA - 12122000
Subscribe to WaterAlert March 30, 2025 - April 6, 2025
Lake or reservoir water surface elevation above NGVD 1929, feet [(2)]
26.94 ft - Apr 06, 2025 09:15:00 AM PDT
Important Data may be provisional
Value
Status
Time
Latest value
26.94 ft
Provisional
Apr 06, 2025
09:15:00 AM PDT
Selected
26.94 ft
Provisional
Apr 06, 2025
09:15:00 AM PDT
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Median
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Statistics for April 6, 2025 based on 27 years of data
Lake or reservoir water surface elevation above NGVD 1929, ft
low (2019)
26.58 ft
25th percentile
26.74 ft
median
26.94 ft
75th percentile
27.4 ft
mean
27.09 ft
high (2011)
28.63 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 2007-10-01 to 2025-04-06
Continuous data are collected via automated sensors installed at a monitoring location.
Data type
Data date range
Lake or reservoir water surface elevation above NGVD 1929, feet [(2)]
2007-10-01 - 2025-04-06
Daily data
2 data types available - data from 1939-01-30 to 2025-04-05
Field measurements
0 data types available
Discrete sample data
3 Observed properties (data types) available - with data from 2015-04-16 to 2015-04-16
1 Sampling activities
- 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 |
|---|---|---|---|
| Inorganics, Minor, metals | Water-quality | 2015-04-16 | 2015-04-16 |
| Organics, other | Water-quality | 2015-04-16 | 2015-04-16 |
| Physical | Daily Values, Unit Values | 1939-01-30 | 2025-04-06 |
| n/a | USGS Annual Water Data Reports Site | 2006-01-01 | 2024-01-01 |
Monitoring location 12122000 is associated with a Lake, Reservoir, Impoundment in King County, Washington. Current conditions of Lake or reservoir water surface elevation above NGVD 1929 are available. Water data back to 1939 are available online.
| Metadata Element | Location Metadata | Metadata Code |
|---|---|---|
|
Agency
|
U.S. Geological Survey | USGS |
|
Site identification number
|
12122000 | n/a |
|
Site name
|
SAMMAMISH LAKE NEAR REDMOND, WA | n/a |
|
Site type
|
Lake, Reservoir, Impoundment
|
LK |
| DMS latitude | 473436 | n/a |
| DMS longitude | 1220636 | n/a |
| Decimal latitude | 47.57648898 | n/a |
| Decimal longitude | -122.1112323 | 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
|
King County | 033 |
| Country | US | n/a |
| Land net location description | SESWS12 T24N R05E W | n/a |
| Name of location map | n/a | |
| Scale of location map | n/a | |
| Altitude of Gage/land surface | 0 feet | n/a |
| Method altitude determined | Level or other surveyed method. | L |
| Altitude accuracy | 10 feet | n/a |
|
Altitude datum
|
National Geodetic Vertical Datum of 1929 | NGVD29 |
|
Subbasin hydrologic unit
|
Lake Washington | 17110012 |
|
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
|
99.6 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 |
