Igo Ono Community Services District (IOCSD)

Each section of ditch has a discussion about the fire severity for that section based upon observations and visual analysis.

The Igo Ono Community Services District (IOCSD) system is approximately 20 miles long spanning from Rainbow Lake Road to the community of Igo.

While the ditch runs approximately 17 miles, the entire system is comprised of Rainbow Lake, Cottonwood Creek, the Rock Ridge Tunnel, Ducket Creek and the entire ditch system, as seen in the overview map below.

Of the 17 miles of ditch only 1.21 miles of the ditch were unburned in the Zogg Fire. Almost 75% of the ditch saw High to Moderate Fire Severity.

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The Zogg Fire did not reach the shores of Rainbow Lake. However, the fire did impact the Cottonwood Creek Drainage both above and below the lake. Low Severity Fire is present below the Rainbow Lake Dam and near the Diversion Dam. High Severity Fire is present along Rainbow Lake Road where the Rocky Ridge Tunnel ends.

The IOCSD ditch enters Ducket Creek just below the Rainbow Lake Road bridge. The water then travels down Ducket Creek to just south of the Sunny Hill Road bridge where a diversion dam diverts the water into the main IOCSD ditch.

The Zogg Fire impacted the entire area from Ducket Creek drainage with fire severity ranging from Moderate to High.

The main IOCSD begins at Ducket Creek. The ditch spans just under three miles between Ducket Creek and Rainbow Lake Road meandering between houses.

While the Ducket Creek drainage was heavily impacted by the fire, the areas directly adjacent to the ditch only saw low to moderate fire severity. Within this 2.86 mile section, 1.35 miles of ditch were unimpacted by the Zogg Fire while the remining 1.51 miles saw Low to Moderate Impacts.

There is approximately 2 miles of ditch between Rainbow Lake Road and the Rector Creek Flume, like the previous section the ditch meanders between homes and grazing lands.

The entire section of ditch between Rainbow Lake Road and the Rector Creek Flume was impacted by the Zogg Fire. Fire Severity throughout the section ranged from Low to Moderate.

There is approximately 2.25 miles of ditch between the Rector Creek Flume and the Eagle Creek Flume, predominately within grazing lands.

The section of ditch between the Rector Creek Flume and the Eagle Creek Flume was completely impacted by the Zogg Fire. Fire Severity throughout the this section was predominately High Severity (>75% of the section), with a small section of Moderate Severity (>25% of the section) near the Rector Creek Flume. The majority of this section is High Fire Severity which could cause significant issues to the ditch system following large rainfall events.

Between the Eagle Creek Flume and Bender Road there is 2.34 miles of ditch. The entire section was impacted by the Zogg Fire.

The section of ditch between the Eagle Creek Flume and Bender Road was completely impacted by the Zogg Fire. Fire Severity throughout the this section encompassed Low Fire Severity (45%), Moderate Fire Severity (25%) and High Fire Severity (30%). The majority of the High Fire Severity was within the Eagle Creek Drainage.

There is just over 3 miles of ditch between Bender Road and Archer Road, meandering between houses and through grazing lands. The entire section of ditch was impacted by the Zogg Fire.

The section of ditch between the Bender Road and Archer Road was completely impacted by the Zogg Fire. Fire Severity throughout the this section was either Moderate Fire Severity (75%) or High Fire Severity (25%). The transition from moderate to high severity occurred near the Archer Road crossing.

Between Archer Road and Zogg Mine Road the IOCSD ditch wraps around the north side of Petty Butte for just over two miles, the area is interspersed with houses but is predominately open land.

The section of ditch between the Archer Road and Zogg Mine Road was completely impacted by the Zogg Fire. Fire Severity throughout the this section was predominately High Fire Severity (85%), except where the ditch intermingled with houses again near Larry Horse Road where it returned to Moderate Fire Severity (15%). The entire north side of Petty Butte is High Fire Severity which could cause significant issues to the ditch system following large rainfall events.

From Zogg Mine to the community of the Igo the IOCSD travels a short 1/2 mile paralleling Zogg Mine Road before meandering through open grazing land to the community of Igo.

The section of ditch between the Zogg Mine Road and the community of Igo was mostly impacted by Low Severity fire (70%), except for the last 30% of the ditch which remained unburned.

The Eagle Creek Supplemental Ditch is primarily utilized by the Mathison property; however, it can also supplement the IOCSD water supply when necessary The supplemental ditch runs approximately 3/4 of a mile from Eagle Creek to the Mathison fields.

The entire 3/4 of a mile of supplemental ditch was impacted by High Severity Fire, which could cause significant issues to the ditch system following large rainfall events.

Below is a breakdown of the Fire Severity by each Ditch Section.