15:27h

Snake River Jackson Hole Wyoming Fishing Report

Snake River Jackson Hole Wyoming Fishing Report

4.24.2019

Todays Snake River Jackson Hole Wyoming Fishing Report is runoff has begun and looking at the forecasted temps it’s only gonna get higher for the next 45-60 days. Please feel free to call us @ 307-413-0669 to get the latest or book your trip for this summer season. We look forward to having you out for a great day on the water!

 

Jackson hole Wyoming Fly fishing Guides

          Current Snake River Flows below Jackson

15:24h

New Fork River Fishing Report

New Fork River Fishing Report

4.24.2019

Todays New Fork River Fishing Report is runoff has begun and looking at the forecasted temps it’s only gonna get higher for the next 45-60 days. Please feel free to call us @ 307-413-0669 to get the latest or book your trip for this summer season. We look forward to having you out for a great day on the water!

Pinedael Wyoming Fishing Guides

              Current New Fork Flows

18:30h

Snake River Fishing Report

Snake River Fishing Report

4.19.2019

This Snake River Fishing Report is to let you all know that our current guiding plan for the summer season on the Snake River is somewhere between July 4- 10th through October. The flows are ever increasing and we’re expecting them to stay high for the next 45-60 days. The graph below shows the current flow prediction which more than likely will change and as soon as it does we’ll update our guiding plan accordingly. In the meantime please feel free to call us for the latest information and/or to book your trip @ 307-413-0669.

Jackson hole fly fishing Guides

               Northwest River Forecast Center

14:45h

Snake River Jackson Hole Wyoming Fishing Report

Snake River Jackson Hole Wyoming Fishing Report

4.19.2019

Runoff has begun is the Snake River Jackson Hole Wyoming Fishing Report. As conditions change we will continue to update and our target date to start taking guided trips on the Snake River in Jackson Hole Wyoming is 7.15.2019. Please call 307-413-0669 for updates, information or to book your trip.

(Thursday April 18, 2019)

Subject:  2019 Upper Snake River Operations Update

Purpose:  The purpose of these Operation Updates is to provide information regarding Reclamation’s operations as the season progresses.  The operations outlined in this update are based on the best data available at the time and are subject to change as new information becomes available.  For additional information and resources, please visit our website at:  https://www.usbr.gov/pn/hydromet/uppersnake/ .

Jackson Lake Dam

·       Current Discharge = 1,050 cfs.

·       At 9 am today (4/18) discharge was increased from 700 cfs to 1,050 cfs. 

·       At 1 pm today (4/18) discharge was increased to 1,400 cfs.

·       At 9 am tomorrow (4/19) discharge will be increased to 1,750 cfs

·       At 1 pm tomorrow (4/19) discharge will be increased to 2,100 cfs.

22:00h

Fontenelle Dam Fishing Update

Fontenelle Dam Fishing Update

 

Greetings,

Releases from Fontenelle Dam are increasing to accommodate increased inflow into the reservoir. Releases will increase from 1,000 cfs to 1,400 cfs according to the following schedule:

Date Time (MDT) Initial Release (cfs) Change (cfs) Final Release (cfs)
4/15/2019 3:00 P.M. 1000 +200 1200
4/16/2019 9:00 A.M. 1200 +200 1400

Please note:
The current release schedule is subject to observed hydrology and is subject to change.
This directive supersedes all previously issued directives and is current until a new directive is issued. All times identified in this directive are local time (Mountain Daylight Time) and are not hour ending.

Regards,

________________________
Dale Hamilton, P.E.

18:39h

Fontenelle Reservoir Data

Fontenelle Reservoir Data

This information is from April 1, 2019

Fontenelle Reservoir is currently at elevation 6464.1 feet, which amounts to 28 percent of live storage capacity. Inflows for the month of March totaled 36,900 acre-feet (af), or 70 percent of average. Near average inflows are occurring and releases are being held constant due to ice in the river reach below. Releases are currently set at 1,000 cfs.

The Colorado Basin River Forecast Center has forecasted inflows that are near average. April, May and June forecasted inflow volumes amount to 80,000 af (94 percent of average), 130,000 af (79 percent of average), and 255,000 af (85 percent of average), respectively.

Please refer to the following link for Green River flow projections, through Green River, WY, provided by the Colorado River Basin Forecast Center: CBRFC Green River, WY Projection

To view the most current reservoir elevation, content, inflow and release, click on: Fontenelle Reservoir Data.

Working Group Meetings
The next Fontenelle Working Group meeting is scheduled for 10:00 a.m., April 24, 2019. The meeting will be held at Seedskadee National Wildlife Refuge. The Fontenelle Working Group is an open public forum for information exchange between Reclamation and other parties associated with the operation of Fontenelle Reservoir.

The fall Fontenelle Working Group meeting was held on August 23, 2018 at the Seedskadee National Wildlife Refuge. Minutes from the meeting are currently posted on the Working Group webpages.

Nathaniel Todea

18:35h

Upper Snake River Wyoming Operations Update

Upper Snake River Wyoming Operations Update

April 12, 2019

Subject:  2019 Upper Snake River Wyoming Operations Update

Purpose:  The purpose of these Operation Updates is to provide information regarding Reclamation’s operations as the season progresses.  The operations outlined in this update are based on the best data available at the time and are subject to change as new information becomes available.  For additional information and resources, please visit our website at:  https://www.usbr.gov/pn/hydromet/uppersnake/ .

Summary

The Upper Snake reservoir system is currently 83% full (3,336,211 acre-feet out of 4,045,695 acre-feet). Official water supply forecast for the April-July runoff period have been finalized and the information is included in the table below. April precipitation to date has been well above normal and accompanied by overall near-normal seasonal temperatures. The observed precipitation early this week caused stream-flow to briefly surge, but the subsequent cooling trend has caused runoff to trend to just above last week’s levels. The wet and cool trend is expected to continue through Wednesday, with a potential warm up Thursday and into Friday before another cooler system moves through the region.

 

Jackson Lake’s discharge target was maintained at 700 cubic feet per second (cfs) and is projected to remain steady for this week as well.

 

Palisades’ releases were increased by approximately 2,800 cfs during the week, and the current discharge target is approximately 9,800 cfs. The reservoir is drafting on a trajectory consistent with current estimates for required flood control levels in early May. Additional increases to discharge are likely next week.

 

Ririe’s discharge target was maintained at 125 cfs this week. Ririe’s release is expected to remain at the current magnitude until the reservoir reaches approximately 60,000 AF.

 

Island Park’s discharge target was held steady this week. Island Park’s discharge is expected to remain at the current target until the reservoir reaches approximately 112,000 AF.

 

American Falls Reservoir’s releases were adjusted downwards early this week to fill the reservoir to acceptable levels. Beginning Thursday, releases were increased to approximately 8,750 cfs. Additional increases are likely for the next week.

 

Little Wood Reservoir is projected to maintain the current release for the next 3-7 days.

 

Facility

% Full

Storage

 (acre-feet)

April – July Runoff Forecast

% of Normal

 Yesterday’s

Inflow

 (cfs)

Estimated Outflow (cfs)

Next anticipated discharge change

Jackson Lake

78%

661,231

104%

698

700

Not scheduled

Palisades

73%

875,835

99%

6,426

9,800

Potential increases in the next 3-7 days

Ririe

67%

54,092

121%

279

125

At content of ~ 60,000

Island Park

80%

108,212

115%

613

648

At content of ~ 112,000

Grassy Lake

88%

13,314

9

0

Not scheduled

American Falls

94%

1,566,029

10,197

8,750

Potential increases in the next 3-7 days

Minidoka

94%

89,591

5,801

7,000

+1,250 cfs 

to 8,250 cfs tomorrow

Milner

1.1 feet below full

5,355

 3,500*

*River QD

          +1,000 cfs

 to 4,500 cfs tomorrow

Little Wood

44%

13,228

141%

1,119

625

Not scheduled

 

Reservoir levels, reservoir discharge and river flows can be monitored on the USBR Hydromet page here: https://www.usbr.gov/pn/hydromet/

 

The Upper Snake “teacup” diagram which provides a graphical overview of system conditions can be accessed here:  https://www.usbr.gov/pn/hydromet/burtea.html

19:36h

Snake River Jackson Hole Wyoming Fishing Report

 

Snake River Jackson Hole Wyoming Fishing Report

(Friday April 5, 2019)

Subject:  2019 Upper Snake River Operations Update

Purpose:  The purpose of these Operation Updates is to provide information regarding Reclamation’s operations as the season progresses.  The operations outlined in this update are based on the best data available at the time and are subject to change as new information becomes available.  For additional information and resources, please visit our website at:  https://www.usbr.gov/pn/hydromet/uppersnake/ .

Summary

The Upper Snake reservoir system is currently 83% full (3,338,896 acre-feet out of 4,045,695 acre-feet). Official water supply forecast the April-July runoff period have been finalized and the information is included in the table below. The forecast for the next 7-10 days indicate persistent precipitation accompanied by cooler than normal temperatures. The cool temperatures and precipitation will likely increase snow-water equivalent above 8,000’ and catalyze runoff in the low to mid elevation bands. Willow Creek and Little Wood basins are expected to observe notable increases in streamflow during the next week. Operational adjustments will be made based on the latest information, and more changes can be expected as reservoir operators gauge the reaction of the runoff to the forecast conditions.

Jackson Lake is projected to maintain the current release until inflow exceeds outflow in the next 2-3 weeks. USGS measured the discharge below the dam, and the new gauge height shift correction computes a flow approximately 85 cubic feet per second (cfs) lower than the previous. The physical discharge from the reservoir was not changed.

Palisades Reservoir is drafting on a trajectory consistent with current estimates for required flood control levels in early May. Palisades Dam’s current discharge is projected to be maintained for the next 3-10 days, or as conditions permit to achieve appropriate progress towards required flood control targets. However, increases to discharge in the next week cannot be ruled out at this point.

Ririe Reservoir has stored approximately 220 AF over the last week. Snow-melt above the reservoir has been increasing and is projected to continue doing so. Relatively cool temperatures so far this spring have kept the above average snowpack in place, and reclamation suspects the runoff period has been condensed versus there being a reduced volume. The ripened snow pack and associated runoff will potentially exhibit volatility in relation to temperatures and precipitation trends over the next 2-3 weeks. Cooler temperatures will lessen the impact of rain on snow, but if warmer temperatures develop quickly, the inflow magnitude will increase accordingly. Considering this, increases to Ririe’s release can reasonably be expected next week.

Island Park Reservoir is expected to maintain the current release until inflow exceeds outflow, and reservoir storage has increased to approximately 108,000 – 110,000 acre-feet.

American Falls Reservoir discharge was reduced by approximately 750 cfs to manage reservoir levels. The Upper Snake Field Office projects American Falls to be near full the first week of May.

Little Wood Reservoir is projected to maintain the current release for the next 7-10 days.

Facility

% Full

Storage (acre-feet)

April – July Runoff Forecast

% of Normal

Current Inflow (cfs)

Current Outflow (cfs)

Next anticipated discharge change

Jackson Lake

78%

658,807

104%

445

689

Not scheduled

Palisades

75%

899,125

99%

4,055

7,008

Potential increases in the next 3-7 days

Ririe

65%

52,419

121%

95

53

Likely in 3-7 days

Island Park

80%

107,858

115%

626

662

Not scheduled

Grassy Lake

88%

13,314

9

0

Not scheduled

American Falls

91%

1,521,159

8,303

8,250

Potential reductions in the next 3-7 days

Minidoka

91%

86,214

8,899

8,250

Potential reductions in the next 3-7 days

Milner

1.1 feet below full

9,975

6,640*

*River QD

Potential reductions in the next 3-7 days

Little Wood

21%

6,153

141%

435

350

Not scheduled

Reservoir levels, reservoir discharge and river flows can be monitored on the USBR Hydromet page here: https://www.usbr.gov/pn/hydromet/

The Upper Snake “teacup” diagram which provides a graphical overview of system conditions can be accessed here:  https://www.usbr.gov/pn/hydromet/burtea.html

18:57h

Green River Pinedale Wyoming Fishing Report

Jackson Hole Fly Fishing Guides

                                   WATER!!!!

 

3.26.2019

Wyoming Water Supply Outlook

HIGHLIGHTS:

…Wyoming February 2019 precipitation was 115 to 125 percent of average…

…Current water year precipitation is averaging 100 to 110 percent of normal across Wyoming…

…Mountain snowpack across Wyoming is 105 to 115 percent of median…

Near normal to slightly above normal snowmelt streamflow volumes are expected across several major basins in Wyoming…

…Total reservoir capacity across Wyoming continues to be 70 to 75 percent by early March…

SYNOPSIS:

February 2019 precipitation totals across Wyoming were 115 to 125 percent of average. Precipitation numbers varied between 250 percent of normal over the Snake and Upper Yellowstone River Drainages (west to northwest Wyoming) to near 50 percent of average over the Tongue River Basin (north central Wyoming).  Current water year (October 2018 – February 2019) precipitation across Wyoming was 100 to 110 percent of average.

Mountain snowpack across Wyoming was 105 to 115 percent of median by early March.  Snowpack “water” numbers and/or SWEs were the highest across basins in southeast and western Wyoming—varying between 110 to 130 percent of median.  SWEs across basins in north central Wyoming were 80 to 100 percent of median.

Near normal to slightly above normal (95 to 105 percent) snowmelt streamflow volumes are expected across several major basins across Wyoming.  Above average snowmelt streamflow volumes are expected across the Snake, Shoshone, Upper North Platte and Laramie Watersheds.  Several rivers along the Tongue, Powder, and Upper Green Basins are forecasted to have below normal streamflow volumes during the upcoming snowmelt season.

Total reservoir capacity across Wyoming continues to be 70 to 75 percent by early March.  Reservoir storages across Wyoming remain above average at 105 to 115 percent for March.

 

18:53h

Snake River Fishing Report

Jackson Hole Fly Fishing Guides

                                  WATER!!!!

 

3.26.2019

Wyoming Water Supply Outlook

HIGHLIGHTS:

…Wyoming February 2019 precipitation was 115 to 125 percent of average…

…Current water year precipitation is averaging 100 to 110 percent of normal across Wyoming…

…Mountain snowpack across Wyoming is 105 to 115 percent of median…

Near normal to slightly above normal snowmelt streamflow volumes are expected across several major basins in Wyoming…

…Total reservoir capacity across Wyoming continues to be 70 to 75 percent by early March…

SYNOPSIS:

February 2019 precipitation totals across Wyoming were 115 to 125 percent of average. Precipitation numbers varied between 250 percent of normal over the Snake and Upper Yellowstone River Drainages (west to northwest Wyoming) to near 50 percent of average over the Tongue River Basin (north central Wyoming).  Current water year (October 2018 – February 2019) precipitation across Wyoming was 100 to 110 percent of average.

Mountain snowpack across Wyoming was 105 to 115 percent of median by early March.  Snowpack “water” numbers and/or SWEs were the highest across basins in southeast and western Wyoming—varying between 110 to 130 percent of median.  SWEs across basins in north central Wyoming were 80 to 100 percent of median.

Near normal to slightly above normal (95 to 105 percent) snowmelt streamflow volumes are expected across several major basins across Wyoming.  Above average snowmelt streamflow volumes are expected across the Snake, Shoshone, Upper North Platte and Laramie Watersheds.  Several rivers along the Tongue, Powder, and Upper Green Basins are forecasted to have below normal streamflow volumes during the upcoming snowmelt season.

Total reservoir capacity across Wyoming continues to be 70 to 75 percent by early March.  Reservoir storages across Wyoming remain above average at 105 to 115 percent for March.