Hydro Summary Reports

​​The Hydro Summary Reports provide a monthly analysis of Western Area Power Administrations​’ hydrological conditions such as reservoir levels, resulting generation forecasts, and probable purchase power forecasts. The first section of the report summarizes the hydro data for the regions and compares to last year’s data. The next section of the report provides more detailed narrative information for each region.​ ​

2025 Hydro Reports

wdt_ID Title Open File Type Month
1 01-2025 Hydro Conditions and Purchase Power Report Open File PDF January
10 02-2025 Hydro Conditions and Purchase Power Report Open File PDF February
12 03-2025 Hydro Conditions and Purchase Power Report Open File PDF March
13 04-2025 Hydro Conditions and Purchase Power Report Open File PDF April
14 05-2025 Hydro Conditions and Purchase Power Report Open File PDF May
15 06-2025 Hydro Conditions and Purchase Power Report Open File PDF June
16 07-2025 Hydro Conditions and Purchase Power Report Open File PDF July
17 08-2025 Hydro Conditions and Purchase Power Report Open File PDF August
18 09-2025 Hydro Conditions and Purchase Power Report Open File PDF September
19 10-2025 Preliminary Hydro Conditions and Purchase Power Report Open File PDF October

Archived Hydro Reports

Date wdt_ID Title Type Year
10/01/2017 10 2017 Hydro Conditions and Purchase Power Report PDF 2017
10/01/2018 11 2018 Hydro Conditions and Purchase Power Report PDF 2018
10/01/2019 12 2019 Hydro Conditions and Purchase Power Report PDF 2019
10/01/2020 13 2020 Hydro Conditions and Purchase Power Report PDF 2020
10/01/2021 14 2021 Hydro Conditions and Purchase Power Report PDF 2021
10/01/2022 15 2022 Hydro Conditions and Purchase Power Report PDF 2022
12/01/2023 16 2023 Hydro Conditions and Purchase Power Report PDF 2023
11/22/2024 17 2024 Hydro Conditional and Purchase Power Report PDF 2024

Last modified on August 5th, 2025