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Maps

This page shows the routes developed through the Community Advisory Process (CAP). Based on community feedback and input, Idaho Power selected a proposed route and alternate routes for the state and federal review processes. Visit the Maps page to view maps developed following the CAP.

Proposed Route | Route Alternatives | Revised Route Maps | Revised Routes - Detailed Evaluation | Initial Proposed Routes | Siting Criteria

Throughout the CAP Idaho Power worked with the communities to identify community criteria, develop a range of possible routes and recommend proposed and alternate routes. The maps shown below are categorized based on their mapping and/or analysis stage.

Proposed Route – Spring 2010

In June 2010, Idaho Power submitted the eastern route alternative as its proposed route in its revised right of way application (SF-299) to the Bureau of Land Management (BLM). Idaho Power also used this proposed route when it submitted the Notice of Intent to the Oregon Department of Energy (ODOE). The BLM and ODOE are proceeding with their separate application review processes. The proposed route and route alternatives are subject to change during the course of the state and federal review process.

Use the map below to review the proposed route.

Proposed Route – Section Level Maps – April 2010

The maps below are detailed segments of the proposed route and alternatives that Idaho Power submitted to the BLM and ODOE-EFSC.

Use the maps below to review the proposed and alternate routes.

County Key Map

Route Alternatives – Section Level Maps – March 2010

During the March 2010 Project Advisory Team (PAT) meetings, Idaho Power presented three route alternatives and requested PAT feedback. Section level maps of the three alternatives can be found below.

Revised Routes – Winter 2009/2010
Revised Route Maps

Following a preliminary evaluation, Idaho Power’s technical team revised the initial proposed routes to improve their potential permissibility. These revised routes are shown below.

Revised Routes Overview Revised Route 4
Revised Route 1 Revised Route 5
Revised Route 1A Revised Route 6
Revised Route 2
Revised Route 3

Revised Routes - Detailed Evaluation

Permitting, Constructability, Mitigation Cost | Region Overview | Analysis by Region | Region Maps

Idaho Power’s technical team conducted a detailed analysis of each of the revised routes to further evaluate their potential permitability, constructability and mitigation costs.

Permitting, Constructability and Mitigation Cost Summary

The maps below show a summary of the permitting, constructability and mitigation cost analysis for the revised routes.

Region Overview

Idaho Power divided the revised routes into 14 regions for detailed analysis.

Analysis by Region

Each revised route was analyzed based on:

  • Permitting difficulty: The relative difficulty of obtaining necessary permits from federal, state and local governments.
  • Construction difficulty: The relative difficulty associated with building the line in a given route. Considerations include terrain, road construction, equipment movement and tree removal.
  • Mitigation cost: The relative cost associated with mitigation actions required by permitting authorities necessary to permit a route.

As part of the analysis, Idaho Power identified which routes are considered to be the most reasonable for each region.

Idaho Power also prepared a mileage summary table and data table for each region.

  • The mileage summary table identifies the number of miles that have:
    • Permitting difficulty (low, moderate, high and exclusion)
    • Construction difficulty (low, moderate and high)
    • Mitigation costs (low, moderate and high)
  • The data table summarizes the number of miles of regulatory and community criteria that apply to the route. (In addition to regulatory criteria, Project Advisory Teams identified community criteria that they wanted considered when determining a route. The “Community Siting Criteria” is described below.)
Region Maps

The analysis results, including the mileage summary table and data table, are shown below for each of the 14 regions. Please note that some regions may be located in more than one PAT area.

North PAT Grant County PAT
Boardman Blue Mountain
Morgan – Ione Onion Creek
Pilot Rock Southwest Region
Umatilla National Forest  
West of National Forest Utility Corridor Harney County PAT
  Southwest Region
Central PAT  
Blue Mountain South PAT
Burnt River Burnt River
Interpretive Center Snake River Valley
Lime Southwest Region
Onion Creek West of Vale
Weatherby
Initial Proposed Routes – Fall 2009
Initial Proposed Route Maps and Preliminary Evaluation

The initial proposed routes were developed by the PATs during mapping sessions held in fall 2009. Idaho Power’s technical team then evaluated each of the routes for potential permitability.

Map Index

The PAT initial proposed routes map designates a number for each route. The route numbers are organized by the north, central and south areas.

Route Maps

The PAT initial proposed routes and preliminary evaluation criteria are shown below. Refer to the map index to locate the designated route number.

Map Preliminary Evaluation Criteria
North
Route N4 Route N4 Preliminary Evaluation
Route N6 Route N6 Preliminary Evaluation
Route N7 Route N7 Preliminary Evaluation
Route N8 Route N8 Preliminary Evaluation
Route N9 Route N9 Preliminary Evaluation
Route N10 Route N10 Preliminary Evaluation
Route N11 Route N11 Preliminary Evaluation
Route N16 Route N16 Preliminary Evaluation
Route N24 Route N24 Preliminary Evaluation
Route N26 Route N26 Preliminary Evaluation
Route N28 Route N28 Preliminary Evaluation
Route N29 Route N29 Preliminary Evaluation
Route N30 Route N30 Preliminary Evaluation
Route N31 Route N31 Preliminary Evaluation
Route N32 Route N32 Preliminary Evaluation
 
Central
Route C3 Route C3 Preliminary Evaluation
Route C4A Route C4A Preliminary Evaluation
Route C4B Route C4B Preliminary Evaluation
Route C4C Route C4C Preliminary Evaluation
Route C6 Route C6 Preliminary Evaluation
Route C8A Route C8A Preliminary Evaluation
Route C8B Route C8B Preliminary Evaluation
Route C8C Route C8C Preliminary Evaluation
Route C8D Route C8D Preliminary Evaluation
Route C8E Route C8E Preliminary Evaluation
Route C8F Route C8F Preliminary Evaluation
Route C9 Route C9 Preliminary Evaluation
Route C11 Route C11 Preliminary Evaluation
Route C13 Route C13 Preliminary Evaluation
Route C17A Route C17A Preliminary Evaluation
Route C17B Route C17B Preliminary Evaluation
Route C18 Route C18 Preliminary Evaluation
Route C21 Route C21 Preliminary Evaluation
Route C24 Route C24 Preliminary Evaluation
Route C25 Route C25 Preliminary Evaluation
Route C40 Route C40 Preliminary Evaluation
Route C41 Route C41 Preliminary Evaluation
 
South
Route S6 Route S6 Preliminary Evaluation
Route S7 Route S7 Preliminary Evaluation
Route S9 Route S9 Preliminary Evaluation
Route S13 Route S13 Preliminary Evaluation
Route S17 Route S17 Preliminary Evaluation
Route S18 Route S18 Preliminary Evaluation
Route S19 Route S19 Preliminary Evaluation
Route S20 Route S20 Preliminary Evaluation
Route S21 Route S21 Preliminary Evaluation
Route S23 Route S23 Preliminary Evaluation
Route S25 Route S25 Preliminary Evaluation
Route S29 Route S29 Preliminary Evaluation
Route S30A Route S30A Preliminary Evaluation
Route S30B Route S30B Preliminary Evaluation
Route S96 Route S96 Preliminary Evaluation
Route S107 Route S107 Preliminary Evaluation
Route H7 Route H7 Preliminary Evaluation
Route H8 Route H8 Preliminary Evaluation
 
Grant County
Initial Proposed Routes – Grant County
Siting Criteria - Opportunities and Constraints - Fall 2009

The PATs and the public identified community, natural, cultural and physical resources that should be considered by Idaho Power when siting the transmission line route. Idaho Power reviewed these resources and identified additional siting criteria. The siting criteria shown below were used in the development and analysis of the initial proposed routes.

*Community-identified resources are highlighted in blue.


This website is the joint Boardman to Hemingway Transmission Line Project site. Information contained on this site is approved for posting by Idaho Power. Visit the Idaho Power website.