Surface Water Coalition Delivery Call

Archived Methodology and Related Orders

December 8, 2025 | Final Order Curtailing Ground Water Rights Junior to August 15, 1952

November 21, 2025 | Final Order Establishing 2025 Reasonable Carryover Step 9

September 11, 2025 | Order Revising July 2025 Forecast Supply

• The revised in-season demand shortfall is 63,700 acre-feet.
• The July 25, 2025 Curtailment Order remains in full force and effect.
• Holders of ground water rights listed in Attachment A of the July 25th Curtailment Order bearing priority dates junior to October 11, 1900, shall continue to be curtailed from diversion and use of ground water pursuant to those water rights, unless they are mitigating in accordance with an approved mitigation plan, or are notified by the Department that the order of curtailment has been modified or rescinded as to their water rights.

July 25, 2025 | Final Order Curtailing Ground Water Rights Junior to October 11, 1900

1. Effective July 25, 2025, ground water users holding water rights bearing priority dates junior to October 11, 1900, within the ESPA ACGWS, and listed in Attachment A of the Curtailment Order, shall curtail/refrain from diversion and use of ground water pursuant to those water rights unless notified by the Department that the order of curtailment has been modified or rescinded as to their water rights.
2. Holders of ground water rights listed in Attachment A of the July 25th Curtailment Order, who were not previously listed in Attachment A of the May 16th Curtailment Order shall have fifteen (15) days from the date of the July 25th Curtailment Order to join a ground water district with an approved mitigation plan, solely for mitigation purposes.
3. The Curtailment Order applies to consumptive ground water rights, including but not limited to, agricultural, commercial, industrial, and municipal uses.
4. The Curtailment Order excludes ground water rights used for de minimis domestic purposes where such domestic use is within the limits defined in Idaho Code § 42-111, and ground water used for de minimis stock watering where such stock watering use is within the limits defined in Idaho Code § 42-1401A(11), pursuant to IDAPA 37.03.11.020.11.

July 10, 2025 | Order Revising April 2025 Forecast Supply and Continuing May 16, 2025 Curtailment Order (Methodology Steps 5 & 6)

• The Director predicts an in-season IDS of 75,300 acre-feet.
• On or before July 24, 2025, ground water users holding consumptive water rights bearing priority dates junior to October 11, 1900, within the ESPA ACGWS shall establish, to the satisfaction of the Director, that they can mitigate for their proportionate share of the predicted in-season IDS of 75,300 acre-feet in accordance with an approved mitigation plan.
• If a junior ground water user cannot establish, to the satisfaction of the Director, that they can mitigate for their proportionate share of the predicted in-season IDS in accordance with an approved mitigation plan, the Director will issue an order curtailing the junior-priority ground water user.

May 16, 2025 | Final Order Curtailing Ground Water Rights Junior to August 28, 1955

• Effective May 31, 2025, ground water users holding water rights bearing priority dates junior to August 28, 1955, within the ESPA ACGWS, and listed in Attachment A of the Curtailment Order, shall curtail/refrain from diversion and use of ground water pursuant to those water rights unless notified by the Department that the order of curtailment has been modified or rescinded as to their water rights. 
• The Curtailment Order applies to consumptive ground water rights, including but not limited to, agricultural, commercial, industrial, and municipal uses. 
• The Curtailment Order excludes ground water rights used for de minimis domestic purposes where such domestic use is within the limits defined in Idaho Code § 42-111, and ground water used for de minimis stock watering where such stock watering use is within the limits defined in Idaho Code § 42-1401A(11), pursuant to IDAPA 37.03.11.020.11.

April 16, 2025 | Final Order Regarding April 2025 Forecast Supply (Methodology Steps 1–3)

• The Director predicts an April IDS of 63,000 acre-feet.
• On or before May 1, 2025, ground water users holding consumptive water rights bearing priority dates junior to August 28, 1955, within the ESPA ACGWS shall establish, to the satisfaction of the Director, that they can mitigate for their proportionate share of the predicted April IDS of 63,000 acre-feet in accordance with an approved mitigation plan.
• If a junior ground water user cannot establish, to the satisfaction of the Director, that they can mitigate for their proportionate share of the predicted April IDS in accordance with an approved mitigation plan, the Director will issue an order curtailing the junior-priority ground water user.
• Visit Docket No. CM-DC-2010-001 to download the April Background information.