Arana Creek Restoration Project

Status Completed County Santa Cruz
Project Type Non-mitigation Location 36.98430° N, -121.99230° W Map
Project Area (Acres) 10.00 Last Updated 13 April 2022
Project Abstract On-the-ground-restoration. Conifer planting; Hardwood planting; Other riparian treatment; Stabilize bank; Willow planting . Remove existing sediment sources, provide native plant cover, improve channel capacity for sediment transport. Reduce flood danger through re-grading a portion of streambank to increase channel capacity.
Administrative Region Central Coast Region - Kevin O'Connor, Moss Landing Marine Labs

Project Identification

DWR P13-002 NRPI - Record Number

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
Arana Creek None Restoration (unspecified) Unspecified Riverine Wetland Riparian area 10.00 Construction completed

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data


Arana Creek Construction completed 10.00


DateTypeDescriptionSite Name
2009-10-01 Project entered Project entered into database
2003-05-31 Groundwork end Estimated date Arana Creek
2001-06-18 Groundwork start Estimated date Arana Creek


Contact Tamara Doan Coastal Watershed Council Not applicable/Unknown


None Restoration (unspecified) CDWR Bay Area Integrated Regional Water Management Plan

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
2016-01-11 6.1 Arana Gulch @ Harbor High School riverine confined 60
2013-10-24 6.1 Arana Gulch riverine non-confined 48
2012-07-11 6.0 Arana Gulch riverine confined 25
2007-12-03 4.2.3 Arana Creek-Restored riverine non-confined 52
2007-12-01 4.2.3 Arana Creek-Impacted riverine non-confined 57
2007-08-15 4.6 Arana Creek riverine non-confined 42
2007-08-15 4.6 Arana Creek riverine non-confined 42
Name File Type Submitted On Submitted By
Arana Gulch Watershed Enhancement Plan Phase I Plan Or Permit 2010-08-09 Cara Clark, Moss Landing Marine Laboratories

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