Forecast for Hoosier Legally and Physically Available Yield

Prepared by: Stockholm Environment Institute, using the Water Evaluation And Planning system (WEAP)
Forecast date: June 30, 2024

Summary

Result Value Units Description Comparison
Forecast Yield 9,305 Acre-feet April through November legally and physically available flows at Hoosier 72.2% of average actual yield (12,892 AF) from 1988-2022
Hoosier Snow Water Equivalent (SWE) 0.0 Inches Observed SWE from SNOTEL site 531 on 6/30/2024 0% of Jun 30 average SWE (0.1 in) from 1981-2024
Cumulative WY to Date Precipitation
(Oct 1 2023 to Jun 30, 2024)		 25.0 Inches Observed Upper Blue precipitation from gridMET data Annual WYTD average (1981-2023): 21.2 in
WY Annual Precipitation Forecast
(Oct 1 2023 to Sep 30 2024)		 29.6 Inches WY 2024 annual precipitation, forecast Annual WY average (1981-2023): 27.7 in

Details

  1. Forecast Yield for 2024 is 9,305 acre-feet, which is 72.2% of average actual yield (12,892) from 1988-2022

    2. This forecast was made on June 30, 2024
    Data sources:

  2. Forecasts made this year by SEI and WEAP (download CSV)

    3. Forecast Date Forecast
    2/4/2024 8,965 AF
    2/11/2024 9,187 AF
    2/18/2024 9,121 AF
    2/25/2024 8,757 AF
    3/3/2024 9,641 AF
    3/10/2024 9,939 AF
    3/17/2024 9,863 AF
    3/24/2024 9,600 AF
    3/31/2024 9,654 AF
    4/7/2024 9,811 AF
    4/14/2024 9,290 AF
    4/21/2024 9,563 AF
    4/28/2024 9,763 AF
    5/5/2024 9,831 AF
    5/12/2024 9,750 AF
    5/19/2024 9,863 AF
    5/26/2024 9,715 AF
    6/2/2024 9,105 AF
    6/9/2024 9,198 AF
    6/16/2024 9,023 AF
    6/23/2024 9,152 AF
    6/30/2024 9,305 AF

  3. Unconstrained Yields prior to 2024, with current forecast

    4. (CSV)

    Data sources:

  4. Snow Water Equivalent (SWE)

    5. Observed Hoosier SWE on June 30, 2024: 0.0 inches, which is 0% of June 30 average SWE (0.1 in) from 1981-2022

    Modeled and forecasted SWE ("Snow Depth (MWE)") compared to Hoosier SNOTEL site ("Snow Gauge")

    (CSV)


    (CSV) (CSV)
    Data sources:

  5. Streamflow at Shoshone

    6. (CSV)
    Data sources:


  6. Streamflow near Cameo

    7. (CSV)
    Data sources:


  7. Precipitation for the Water Year (Oct 1 to Sep 30)

    8. (CSV) (CSV)
    Data sources:


  8. Cumulative WY-to-date precipitation (Oct 1 to Jun 30)

    9. Cumulative precipitation from Current Water Year start (Oct 1) to date of forecast (Jun 30); also compared to historical years
    (CSV) (CSV)
    Data sources:


  9. Cumulative precipitation from forecast date to end of WY (Jun 30 to Sep 30)

    10. (CSV) (CSV)
    Data sources:

Methods

  1. Use of GridMET climate products
    2. Climate data from GridMET: https://www.climatologylab.org/gridmet.html

    Direct download and processing into WEAP of:
  2. How the climate datasets are assembled


  3. How the WEAP model is run

WEAP Model

Model Name: ColoHeadwaters_05Apr2022 (download model)


References and Links

  1. Previous Hoosier L&P Forecasts: http://csu.weap21.org/Forecast
  2. Forecast streamflows by USDA Natural Resources Conservation Service (NRCS)
  3. Snowpack Map
  4. Gridmet Seasonal Forecast Maps
  5. Observed SWE from SNOTEL site 531


Created by WEAP version 2023.0 on June 30, 2024
WEAP Website