Orange Memorial Park Water Capture Project

Status Planning County San Mateo
Project Type Compensatory mitigation Location 37.65349° N, -122.42740° W Map
Project Area (Acres) No Data Last Updated 20 May 2021
Project Abstract The proposed Project would result in the construction and operation of a water capture facility through the installation of a drop inlet, diversion channel, and inlet junction structure (trash screen) in the upper and western end of the Colma Creek channel and Orange Memorial Park.

Project Identification

1600-2019-0390 CDFW - Streambed Alteration Agreement
862602 SWRCB - 401 Certification Letter (e.g., Site Number or WDID)
2019-00181S USACE - Nationwide General Permit

Habitat Plan

Site NamePhaseActivitySubActivitiesHabitatSubHabitatAcresActivity StatusWater Regime
No Data

Related Habitat Impacts

HabitatAcres LostType of Loss
No Data


Orange Memorial Park Water Capture Project Construction planned No Data


DateTypeDescriptionSite Name
2021-04-09 Permit The San Francisco Bay RWQCB amended the Project's 401 Water Quality Certification on April 9, 2021.
2020-04-04 Permit California Department of Fish and Wildlife - Final Streambed Alteration Agreement Notification No. 1600-2019-0390-R3, Colma Creek, Orange Memorial Park Storm Water Capture Project
2020-03-18 Permit Department of the Army Nationwide Permit (NWP) 7 - Outfall Structures and Associated Intake Structures Authorization for the Orange Memorial Park Stormwater Capture PRoject - File Number 2019-00181S
2020-02-21 Permit Clean Water Act Section 401 Water Quality Certification - Place ID 862602; 2 CW435257; Corps ID 2019-00181S


Agency Staff Bianca Liu City of South San Francisco Engineering Division
Agency Staff Tahsa Sturgis San Francisco Bay Regional Water Quality Control Board Water Resource Control Engineer
Contractor Juliana Prosperi Wood Environment & Infrastructure Solutions
Agency Staff Monica Oey California Department of Fish and Wildlife Bay Delta Region
Agency Staff Greg Brown U.S. Army Corps of Engineers Regulatory Division
Partner Doug Johnson California Invasive Plant Council Not applicable/Unknown
Agency Staff Wesley Stokes California Department of Fish and Wildlife Bay Delta Region


Funding Need: $15,500,000

No Data

Related CRAM Assessments

Visit DateVersionSite NameWetland TypeIndex Score
No Data
Name File Type Submitted On Submitted By
Army Corps of Engineers Section 404 Nationwide Permit Plan Or Permit 2021-02-22 Juliana Prosperi, Wood
CWA Section 401 Water Quality Certification Plan Or Permit 2021-02-22 Juliana Prosperi, Wood
California Department of Fish and Wildlife Plan Or Permit 2021-02-22 Juliana Prosperi, Wood

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