Truckee River Fish Habitat Enhancement Project, Nevada County

Status Completed County Nevada
Project Type Non-mitigation Location 39.34017° N, -120.12987° W Map
Project Area (Acres) No Data Last Updated 14 February 2024
Project Abstract This project will enhance fish and wildlife habitat through the Truckee River State Wildlife Area by constructing three boulder cross-vanes within the Truckee River. The cross-vanes will create riffle and pool complexes, reduce stream temperatures, increase dissolved oxygen (DO), and increase salmonid habitat and cover.
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
No Data

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data


Glenshire Construction completed No Data


DateTypeDescriptionSite Name
2020-12-08 Report A report analyzing snorkel survey data obtained in August 2020 was completed.
2020-11-01 Report A report analyzing revegetation monitoring photo points obtained in September 2020 was completed.
2020-09-18 Monitoring start FY 2020 Revegetation Monitoring Photo Points for the TRFHEP were taken along the project access route. Monitoring occurred on 09/18/20.
2020-08-25 Monitoring start Snorkel surveys were carried out by Trout Unlimited (TU) during August of 2020 to evaluate fish abundance and distribution, specifically within the Glenshire Project footprint to assess pre-restoration status. Monitoring occurred on 8/25/20 and 8/27/20.


No Data


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Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data
Name File Type Submitted On Submitted By
FY2020 TRFHEP Regetation Monitoring Photo Points Photo 2021-01-11 Jessica Strickland, Trout Unlimited
FY2020 TRFHEP Revegetation Monitoring Photo Point Report Monitoring Report 2021-01-11 Jessica Strickland, Trout Unlimited
Snorkel Surveys for the Truckee River Fish Habitat Enhancement Project FY 2020 Monitoring Report 2021-01-11 Jessica Strickland, Trout Unlimited

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