Hubbard Creek Reservoir: 73.9% full as of 2018-09-21

The elevation-storage rating curve used to produce the storage hydrograph is made of two segments: (1) the segment up to the conservation pool top (below the red line) is based on measured data, and (2) the segment in the flood pool (above the red line) is an extrapolation from the first segment and shouldn't be relied upon for flood storage information.

Historical Data

Date Percent Full Mean Water Level
(ft)
Reservoir Storage
(acre-ft)
Conservation Storage
(acre-ft)
Conservation Capacity
(acre-ft)
Surface Area
(acres)
Most recent 2018-09-21 73.9 1,177.29 242,060 235,144 318,067 12,674
1 day prior 2018-09-20 74.0 1,177.31 242,313 235,397 318,067 12,682
2 days prior 2018-09-19 74.1 1,177.34 242,694 235,778 318,067 12,694
1 week prior 2018-09-14 74.4 1,177.42 243,710 236,794 318,067 12,726
1 month prior 2018-08-21 74.9 1,177.53 245,113 238,197 318,067 12,771
3 months prior 2018-06-21 80.3 1,178.85 262,310 255,394 318,067 13,271
6 months prior 2018-03-21 85.1 1,179.98 277,558 270,642 318,067 13,689
1 year prior 2017-09-21 90.7 1,181.25 295,253 288,337 318,067 14,159
*

Percent Full is based on Conservation Storage and Conservation Capacity and doesn't account for storage in flood pool.

**

   Values above, including today's are averaged conditions. For near real-time instantaneous water level, see table below or the interactive map viewer.

Most Recent Instantaneous Water Level

Date/time Water Level
(ft)
Conservation Pool Elevation
(ft)
Height Above Conservation Pool
(ft)
Most recent 2018-09-22 00:15 1,177.50 1,183.3 -5.8 below flood pool
1 hour prior 2018-09-21 23:15 1,177.50 1,183.3 -5.8 below flood pool
2 hours prior 2018-09-21 22:15 1,177.48 1,183.3 -5.8 below flood pool
6 hours prior 2018-09-21 18:15 1,177.34 1,183.3 -6.0 below flood pool
12 hours prior 2018-09-21 12:15 1,177.29 1,183.3 -6.0 below flood pool
24 hours prior 2018-09-21 00:15 1,177.30 1,183.3 -6.0 below flood pool
48 hours prior 2018-09-20 00:15 1,177.32 1,183.3 -6.0 below flood pool
*

Data is provisional and subject to revision.

Additional Information

Impoundment date 1962-01-01
Vertical datum NAVD88
Gauge USGS:08086400
Dead pool elevation
ending 2010-10-01
1,136.0 ft above NGVD29
Dead pool elevation
starting 2010-10-01
1,136.3 ft above NAVD88
Service spillway crest elevation 1,176.5 ft above NGVD29
Top of flood gate elevation 1,185.0 ft above NGVD29
Emergency spillway crest elevation 1,194.0 ft above NGVD29
Emergency spillway crest elevation 1,197.0 ft above NGVD29
Top of dam elevation 1,208.0 ft above NGVD29
Conservation pool elevation
ending 2010-10-01
1,183.0 ft above NGVD29
Conservation pool elevation
starting 2010-10-01
1,183.3 ft above NAVD88
Data download (CSV) period of record, last one year, last 30 days

Elevation-Area-Capacity Curves

1962-01-01 (source: usgs)
1997-02-01 (source: twdb) : GIS Data

Lake Location