B. Description of Proposed Boundary Modification

1. Short Description

   Tulelake Irrigation District (TID) is exploring a modification to the Tule Lake Subbasin (1-2.01)
2. Type of basin boundary revision

   • Scientific External
3. Provide a narrative overview of the boundary modification request and how the resulting modification would affect likelihood of sustainable management.

   Tulelake Irrigation District (TID) is exploring a modification to the Upper Klamath Basin, Tule Lake Subbasin (Basin No. 1-2.01). There appear to be inconsistencies between the written description of the Tule Lake Subbasin provided in Bulletin 118 and the accompanying map. Additional information and more recent mapping have become available since the 2003 update to Bulletin 118. The proposed basin boundary modification is a scientific modification. The proposed modification will result in a more accurate boundary for sustainable management of the Tule Lake Subbasin.

   Attachment(s):
4. List the existing basin(s)/subbasin(s) to be modified by this request

   • 1-002.01 KLAMATH RIVER VALLEY - TULELAKE
5. Provide the proposed name for the new basin(s) or subbasin(s)

   No proposed change

C. Initial Notification and Combination of Requests

1. Was an initial notification submitted to the Department?

   Yes
   List of submitted initial notification for the selected basin(s)/subbasin(s).

   Local Agency	Potential Basin(s)/Subbasin(s)
   Tulelake Irrigation District	1-002.01 KLAMATH RIVER VALLEY - TULELAKE

2. Does this application include a combination of requests?

   No

D. Required Documents for All Modifications

1. A copy of the statutory or other legal authority under which the requesting agency was created with specific citations to the provisions setting forth the duties and responsibilities of the agency.

Attachment(s):

• TID Legal Authority 4 Boundary Mod..pdf (121kB) Uploaded on 03/28/2016 at 03:00PM

2. A copy of the signed resolution adopted by the requesting agency formally initiating the boundary modification request process.

Attachment(s):

• TID Feb Minutes - Initial Notice Motion.pdf (78.5kB) Uploaded on 03/28/2016 at 02:05PM

3. A map of adequate scale (no greater than 1:24,000; e.g., 1:10,000 is not acceptable) showing the proposed modified basin boundary in relation to the existing Bulletin-118 basin boundary and the local agencies that are within or bordering the existing and proposed basin.

Attachment(s):

• Tulelake Irrigation District Groundwater Subbasin Modification.pdf (582.4kB) Uploaded on 03/28/2016 at 02:11PM

4. A GIS shapefile of the proposed modified groundwater basin boundaries. Download Existing B118 basin shape file | DWR Spatial Data Standards

Attachment(s):

• Proposed_Tule_Lake_Subbasin_Boundary.zip (3.6kB) Uploaded on 03/28/2016 at 02:12PM

5. A GIS shapefile of the political boundaries of any affected or adjacent local agency. Download water agency shape file

Attachment(s):

• Water_Districts.zip (191.9kB) Uploaded on 03/28/2016 at 02:12PM

6. Any information, if necessary, to enable DWR to satisfy the requirements of a responsible agency pursuant to the California Environmental Quality Act.

The proposed subbasin boundary modification does not qualify as a project under CEQA.

E. General Information

1. Describe the lateral boundaries of the alluvial aquifer or aquifers that form the groundwater basin and the definable bottom of the basin. The description must be in terms that are clear, definite, and sufficiently detailed to allow an authoritative map of the proposed basin boundaries to be plotted using the given description.

The Tule Lake Subbasin is a portion of Upper Klamath River Groundwater Basin located in California and Oregon. The subbasin is bounded to the east by the Saddle Blanket Fault Zone, a north-trending normal fault which forms the western edge of the block faulted mountains between Tule Lake and Clear Lake Reservoir. From a location where the easternmost fault of the Saddle Blanket Fault Zone intersects the California-Oregon border1, the subbasin boundary follows this fault south2 then continues along a fault approximately ½ mile to the southwest3. At the southerly end of this fault4, the subbasin boundary continue west to the north of Casuse Mountain5, 6, 7. The subbasin is bounded to the south by the low-lying volcanic fields on the north slope of the Medicine Lake Highlands. The subbasin is bounded to the west by the Gillems Bluff Fault8 which extends beneath and is a major structural feature of the Medicine Lake volcanic highlands (Lavine 1994). The fault forms the steep eastern escarpment of Sheepy Ridge, which separates the Tule Lake and Lower Klamath subbasins, and the subbasin boundary follows the Gillems Bluff Fault10 to the north11, from where it extends to a location on the California-Oregon border12. For the purposes of this Basin Boundary Modification and SGMA, the subbasin is bounded by to the north by the state boundary of Oregon and California; therefore, the subbasin boundary extends easterly along the state line to the point of the beginning1. To the north of the border, the subbasin extends into Oregon and is bounded by northwest trending normal faults on the south side of the mountain block dividing Poe Valley from the Tule Lake Subbasin. Approximately two thirds of the subbasin are in California. 1) 41.9971°, -121.3160° 2) 41.9297°, -121.3085° 3) 41.9214°, -121.3215° 4) 41.7953°, -121.2848° 5) 41.7971°, -121.3011° 6) 41.8079°, -121.3179° 7) 41.8079°, -121.3497° 8) 41.7934°, -121.4128° 9) 41.8264°, -121.5546° 10) 41.8509°, -121.5717° 11) 41.9590°, -121.5747° 12) 41.9992°, -121.5986°

F. Notice and Consultation

1. List all local agencies and public water systems affected by the basin(s) modification request.

See attached

Attachment(s):

• Tule Lake Subbasin Affected Agencies.pdf (176.9kB) Uploaded on 03/28/2016 at 02:37PM

2. Explain the methods used to identify interested local agencies and public water systems in the affected basin(s):

Local knowledge and map overlays of jurisdictional boundaries. Phone and e-mail conversations/notifications with local agencies.

3. Provide information regarding the nature of consultations with affected or interested agencies. Attach and cite any copies of correspondences with local agencies and public water systems and/or any other persons or entities consulted.

See attached

Attachment(s):

• 3-2-2016 Groundwater Workshop Notice.msg (38.5kB) Uploaded on 03/28/2016 at 02:44PM
• 2-26-2016 TID Letter GW Workshop - AB 1816 Public Meeting.pdf (225kB) Uploaded on 03/28/2016 at 02:44PM
• Boundary Mod Initial Notification Affected Agencies.msg (2MB) Uploaded on 03/30/2016 at 10:36AM

4. Provide a summary of all public meetings at which the proposed boundary modification was discussed or considered by the requesting agency. Attach and cite any copies of agendas and notices published.

TID held a groundwater workshop for affected agencies and the public for SGMA informational purposes and to discuss boundary modification of the Tule Lake Subbasin. See attached

Attachment(s):

• TID GW Workshop Attendance 3-14-16.pdf (122.8kB) Uploaded on 03/28/2016 at 02:52PM
• TID GW Workshop Agenda 3-14-16.pdf (22.4kB) Uploaded on 03/28/2016 at 02:52PM
• 2-26-2016 TID Letter GW Workshop - AB 1816 Public Meeting.pdf (225kB) Uploaded on 03/28/2016 at 02:56PM
• Boundary Mod Initial Notification Affected Agencies.msg (2MB) Uploaded on 03/28/2016 at 02:56PM
• 3-2-2016 Groundwater Workshop Notice.msg (38.5kB) Uploaded on 03/28/2016 at 02:55PM

5. Attach a copy of all comments regarding the proposed boundary modification received by the requesting agency and a summary of any responses made by the requesting agency.

None

H. Local Support

1. Provide any evidence that sufficient information was provided to affected agencies and systems regarding the proposed boundary modification.

See attached notices of TID's intention of boundary modification with preliminary map and TID's groundwater workshop.

Attachment(s):

• 3-2-2016 Groundwater Workshop Notice.msg (38.5kB) Uploaded on 03/28/2016 at 03:04PM
• Boundary Mod Initial Notification Affected Agencies.msg (2MB) Uploaded on 03/28/2016 at 03:04PM

2. Provide a list of all affected agencies and affected systems that submitted comments and/or documents in support or opposition to the proposed boundary. The agency submitting their support or opposition for a boundary modification must provide a copy of a resolution formally adopted by the decision-making body of the affected agency or system or a letter signed by an executive officer or other official with appropriate delegated authority who represents the agency or system. Attach copies of the resolution and/or signed letter detailing the support or opposition submitted.

None

3. Provide any evidence that rebuts any opposition to the proposed boundary modification.

Not applicable

I. Hydrogeologic Conceptual Model

1. Principal aquifer units within requested basin.
2. Lateral boundaries of the proposed basin, including:
   1. Geologic features that significantly impede or impact groundwater flow.
   2. Aquifer characteristics that significantly impede or impact groundwater flow.
   3. Significant geologic and hydrologic features and conditions of the principle aquifer units, as appropriate, including information regarding the confined or unconfined nature of the aquifer, facies changes, truncation of units, the presence of faults or folds that impede groundwater flow, or other groundwater flow restricting features.
   4. Key surface water bodies, groundwater divides and significant recharge sources.
3. Recharge and discharge areas within the basin.
4. Definable bottom of the basin or subbasin.

The department may waive this requirement for an internal boundary modification if the requesting agency is able to demonstrate that the proposed boundary modification is unlikely to affect sustainable groundwater management.

See attached Hydrogeologic Conceptual Model prepared by MBK Engineers.

Attachment(s):

• FINAL Hydrogeological Conceptual Model 03.23.2016.pdf (2.4MB) Uploaded on 03/28/2016 at 03:08PM

J. Technical Studies for External Scientific Modifications

1. A qualified map that depicts the lateral boundaries of the aquifers that define the basin or subbasin.

See attached

Attachment(s):

• Tule Lake Subbasin_Geology Map 04.01.2016.pdf (733.4kB) Uploaded on 04/01/2016 at 02:39PM
• Geologic Map of California_Alturas Sheet.pdf (8.9MB) Uploaded on 03/30/2016 at 10:18AM

2. A technical study that provides subsurface data that demonstrates the vertical thickness and relevant physical properties of the alluvial aquifer or stacked series of alluvial aquifers.

See attached

Attachment(s):

• USGS Groundwater Simulation and Management Models for the Upper Klamath Basin.pdf (17.1MB) Uploaded on 03/30/2016 at 10:29AM
• USGS Groundwater Hydrology of the Upper Klamath Basin.pdf (14.3MB) Uploaded on 03/30/2016 at 10:23AM
• USGS Evaluation of Alternative Groundwater-Management Strategies.pdf (4.4MB) Uploaded on 03/30/2016 at 10:12AM
• USGS Effects of Groundwater Pumping on Agriculatural Drains in the Tule Lake Subbasin.pdf (4.1MB) Uploaded on 03/28/2016 at 03:19PM