Mapes Ranch Wet Meadow Restoration Project

Status Completed County Lassen
Project Type Non-mitigation Location Not Mapped
Project Area (Acres) 38.00 Last Updated 7 January 2022
Project Abstract The spring channels in the project area had been diverted and highly altered to accommodate a series of small ponds once used for fish farming. The objective of this project was to return the spring channel to natural functioning condition in order to enhance and protect wet meadow and riparian habitat.
Project Groups NRCS - WRE/WRP
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
Mapes Ranch Project Area Implementation Restoration/Rehabilitation Seeps and springs wetlands None 38.00 Completed Perennial non-tidal

Related Habitat Impacts

Impact Project NameHabitatAcres LostType of Loss
No Data


Mapes Ranch Project Area Completed 38.00


DateTypeDescriptionSite Name
2021-12-28 Report Final Report Mapes Ranch Project Area
2021-07-06 Monitoring end Project work has held up as intended, and vegetation continues to increase along the restored banks.
2020-12-28 Report Mapes Ranch Project Area
2019-12-19 Report Mapes Ranch Project Area
2019-12-18 Monitoring start
2018-05-31 Groundwork end Mapes Ranch Project Area
2018-05-31 Groundwork end
2018-01-29 Report Mapes Ranch Project Area


Landowner Todd Swickard Mapes Ranch & Lyons Investments Not applicable/Unknown
Agency Staff Susan Abele USFWS - U.S. Fish and Wildlife Service Reno Fish and Wildlife Office


Implementation Restoration/Rehabilitation USFWS Partners for Fish and Wildlife $111,376
Implementation Restoration/Rehabilitation NRCS Wetland Reserve Program $59,040
Implementation Restoration/Rehabilitation Landowner Cost Share $22,180

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data

Performance Measures

Plan NamePlan GoalPerformance MeasureMeasure ValueStatusEvaluation Date
Revegetation Plan Ecosystem Protection, Restoration, and Enhancement Percent absolute vegetation cover (Year 3)
50 / 50 percent
measure achieved 2021-07-06
Name File Type Submitted On Submitted By
Project Reports Monitoring Report 2022-01-03 Elizabeth van Diepen, Lahontan Regional Water Quality Control Board

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