Johnson Canyon Restoration

Status Completed County Nevada
Project Type Non-mitigation Location 39.33549° N, -120.29558° W Map
Project Area (Acres) No Data Last Updated 20 May 2021
Project Abstract The Project is a restoration project that will incorporate activities to stabilize a segment of eroding stream bank, stabilize areas of erosion to preserve existing floodplain function and increase soil infiltration capacity and revegetate denuded habitat areas to improve a key tributary to Donner Lake and the Truckee River.
Administrative Region Lahontan Regional Water Quality Control Board - Tiffany Steinert, Jan Zimmerman, Elizabeth van Diepen, LRWQCB

Project Identification

No Data

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Johnson Canyon Restoration None Restoration (unspecified) Sediment Management, Vegetation Management Upland Forested No Data Implementation in-progress

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data


Johnson Canyon Restoration Completed No Data


DateTypeDescriptionSite Name
2018-09-20 Groundwork end Construction for the 2018 season has been completed across 2.7 acres of denuded habitat areas. Johnson Canyon Restoration
2018-09-13 Groundwork end Construction for the 2018 season has been completed across 2.7 acres of denuded habitat areas.
2018-08-06 Groundwork start


No Data


No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Criteria

StatusDetailsEvaluation Date
Original criteria Improve soil infiltration - Over 500 cubic yards of concrete and asphalt will be removed from the project site and native top soil will be incorporated into the site where non-native materials were present prior to construction. All compacted soils will be loosened, screened to 6” minus sizing and reincorporated into the site. In addition, increased infiltration will be documented through penetrometer measurements to determine consistency and hardness of soil conditions prior to, and after construction. 2018-08-01
Original criteria Improve vegetative cover - Revegetation will take place after the project site is de-compacted and regraded. Planting of native, drought tolerant plant species and widespread seed spreading will take place to increase vegetative cover and species composition. 2018-08-01
Original criteria Improve site stability - Existing rills and gullies within the project site will be filled and regraded to prevent additional erosion. Over 1500 linear feet of currently existing eroded rills and gullies will be filled and regraded within the project site. 2018-08-01

No files found.

How to Use the Habitat Development Curve

Habitat Development Curves (HDCs) are used to determine the developmental status and trajectory of on-the-ground projects to create, restore, or enhance California wetland and stream habitats. Each HDC is based on assessments of habitat condition for different age areas of one habitat type that in aggregate represent the full spectrum of habitat development. The assessments of condition are provided by expert applications of the California Rapid Assessment Method (CRAM). Visit the CRAM website for more information about CRAM.

For each HDC, reference condition is represented by areas of a habitat that consistently get very high CRAM scores, have not been subject to disruptive management practices, and exist within landscapes that are protected and managed for their natural conditions. The horizontal lines intersecting the top of an HDC represent the mean CRAM score and standard deviation of scores for 25 qualifying reference areas.

The age of a project is estimated as the elapsed time in years between the groundwork end date for the project and the date of the CRAM assessment. To add or update a groundwork end date, use the Project Events form in Project Tracker ( The minimum age in years of a non-project area, including any natural reference area, is estimated from all available local information, including historical maps and imagery, historical written accounts, and place-specific scientific studies of habitat development.

An HDC can be used to address the following questions:

  1. At what time in the future will the area of assessed habitat achieve the reference condition or other milestones in habitat development? The HDC can answer this question if the CRAM score for the assessed area is within the confidence interval of the HDC. The answer is the time in years along the HDC between the current age of the assessed area and the future date corresponding to the intersection of the HDC and the reference condition or other milestone.
  2. Is the area of assessed habitat likely to develop faster, slower, or at the same pace as most other areas of the same habitat type? The habitat area is likely to develop faster, slower, or at the same pace if the CRAM score for the area is above, below, or within the confidence interval of the HDC, respectively.
  3. What can be done to improve the condition of the habitat area or to increase its rate of development? HDCs by themselves cannot answer this question. Possible answers can be inferred by the following analysis that involves HDCs:
    1. Examine the HDC for each of the four CRAM Attributes;
    2. Identify the Attribute(s) scoring below the HDC;
    3. For any low-scoring Attribute, examine the component Metric Scores (note: the Metric Scores for any public CRAM assessment in the CRAM database can be obtained through EcoAtlas);
    4. Assume the low score of an Attribute is due to its low-scoring Metric(s);
    5. Consider modifying the design or management of the habitat area in ways that will sustainably increase its score(s) for the low-scoring Metric(s).

For more information about CRAM Attributes and Metrics, including their scientific rationale, see the CRAM Manual.

Display Habitat Development Curves For Wetland Type:

CRAM Site Scores