Diablo Reservoir Near Newhalem reservoir
Diablo Reservoir Near Newhalem
Diablo Reservoir is a man-made lake located near Newhalem, WA in the North Cascades. The reservoir was created in 1930 to generate hydroelectric power for the city of Seattle. The hydrology of the lake is heavily influenced by the Skagit River, which feeds into the lake. Specific surface flow comes from the Skagit River, as well as several smaller creeks and streams in the area. The reservoir is also a major provider of snowpack, which is critical for maintaining water levels during the dry summer months. The water from Diablo Reservoir is primarily used for hydroelectric power generation, but it also supports local agriculture and recreational activities such as fishing, boating, and camping. The surrounding wilderness is home to a variety of wildlife, including bears, mountain goats, and bald eagles.
Daily levels at Diablo Reservoir Near Newhalem
Storage volume, pool elevation, and total release plotted from the operating agency's daily observations.
Lake or reservoir water surface elevation above NGVD 1929, ft
ft · code 62614
Plan around the weather
Same NOAA / yr.no feed Snoflo's iOS app uses. Watch the precipitation column on the meteogram -- rain on the basin upstream typically lifts inflow 24-72 hours later.
Next 5 days, hour by hour
Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.
5-day forecast table
Every 3 hours, broken out across temperature, snow, rain, humidity, and wind. Each cell is colour-coded relative to the column min/max.
| Time | Condition | Temp (°F) | Snow (in) | Rain (in) | Humidity (%) | Wind (mps) | Wind dir |
|---|---|---|---|---|---|---|---|
| Loading detailed forecast… | |||||||
15-day temperature & precipitation
Daily temperatures, snow, and rain projected over the next two weeks.
Nearby streamflow gauges
USGS streamgauges around Diablo Reservoir Near Newhalem -- inflows here typically show up in storage 24-72 hours later.
| Streamgauge | Discharge | View |
|---|---|---|
| Thunder Creek Near Newhalem | 956 cfs | → |
| Skagit River At Newhalem | 3,710 cfs | → |
| Newhalem Creek Near Newhalem | 30 cfs | → |
| Bacon Creek Below Oakes Creek Near Marblemount | 835 cfs | → |
| Cascade River At Marblemount | 2,000 cfs | → |
| Skagit River At Marblemount | 6,240 cfs | → |
Make a day of it
Boat launches, lakeside camping, fishing access, and other reservoirs near Diablo Reservoir Near Newhalem.
Boat launches
- Marblemount Boat Launch
- National Forest Development Road 1150 Whatcom County
- National Forest Development Road 1142 Whatcom County
- National Forest Development Road 11, Concrete
- National Forest Development Road 012 Whatcom County
- National Forest Development Road Whatcom County
Campgrounds
Paddle runs
- Begins Below Gorge Powerhouse To Ross Lake National Recreation Area Boundary
- Begins Upstream Of The Diversion Dam (Rm 1) To Confluence With Skagit River
- Upper Goodell Campground (Rm 0.5) To Confluence With Skagit River
- Ross Lake National Recreation Area Boundary To Slack Water Of Ross Lake
- Confluence Of Canyon And Granite Creeks To Ross Lake National Recreation Area Boundary
- Headwaters To Ends Upstream Of The Diversion Dam (Rm 1)
More reservoirs
Track Diablo Reservoir Near Newhalem in the Snoflo app
Save this reservoir as a favorite and set push alerts when storage crosses a threshold (e.g. "alert me at 80% of normal").
About Diablo Reservoir Near Newhalem
Where does the data for Diablo Reservoir Near Newhalem come from?
Daily storage, pool elevation, and release rates are sourced from USGS, USBR, and USACE monitoring stations. Weather forecast comes from NOAA / yr.no -- the same feed Snoflo's iOS app uses.
How often is the report updated?
Storage observations are updated daily by the operating agency. The 15-day weather forecast refreshes throughout the day. Snoflo caches and renders the most recent observation -- check the "as of" timestamp on the storage card.
What does the Hazard hazard rating mean?
The Corps of Engineers' hazard potential classification grades probable consequences if the dam fails: High = probable loss of human life; Significant = no probable loss of human life but possible economic loss / environmental damage; Low = no probable loss of human life, only minor economic / environmental losses. See the Dam Data Reference card above for the full definitions.
What's "% of normal"?
The current storage value compared to the historical average storage on this calendar day. 100% = right on average; values above 100% mean above-normal storage (wet year); values below mean below-normal (dry year or drought).
Can I get alerts when storage crosses a threshold?
Yes -- alerts are managed in the Snoflo iOS app. Favorite this reservoir, set a threshold, and you'll get a push the moment conditions cross.
Other water bodies near here
Snoflo-tracked reservoirs and dams within driving distance of Diablo Reservoir Near Newhalem.