- Awards and Recognition
- Annual Reports
- Barrier Aesthetics
- Blue Star Memorial Highways
- Classified Landscaped Freeways
- Community Identification
- Context Sensitive Solutions
- Erosion Control Toolbox
- Gateway Monuments
- Highway Planting
- Mission Bells
- Nonstandard Specification Info
- Policy, Manuals and Procedures
- Roadside Toolbox
- Safety Roadside Rest Area System
- Scenic Highways
- Standard Specifications and Plans
- Transportation Art
- Visual Impact Assessment Outlines
- Visual Impact Assessment Training
- Water Conservation
|Native Plant Community Installation
Lake Tahoe, California
|Drought Tolerant Landscape
Interstate Route 80
The Department of Transportation is a good steward of California’s limited water resources. The Department actively manages, promotes and implements water conservation practices within the highway transportation system and associated facilities. Cost effective and appropriate water conservation strategies are employed in the design, construction, operation and maintenance of transportation facilities including, to the maximum extent practicable, the use of recycled water and state of the art irrigation technology for highway landscaping.
Water Conservation Techniques
- Select plant material appropriate to the local rainfall, soils, and exposure. Native plants shall be used to the maximum extent feasible.
- When specifying containerized plant material and for project sites with compacted soils (if not already rootable), fracture or rip the soils to a 3' depth and incorporate a minimum of 1" of compost into the top 12 inches of soil.
- Apply 2" - 3" of wood chip or bark mulch in a 2' to 3' diameter around the plant to conserve soil moisture and control weeds.
- Use recycled water or non potable whenever available, consistent with quality and health standards, and within justifiable costs.
- Whenever possible, utilize "smart" irrigation controllers to minimize the amount of supplemental water required.
Governor's Office Documents
|Governor Proclaims Drought, Orders Immediate Action to Address Situation|
|Governor Schwarzenegger’s Executive Order S-06-08|
|Governor Schwarzenegger Takes Action to Address California’s Water Shortage
Proclaims State of Emergency, Directs Government to Utilize Resources, Help People
caltrans Guidance and Manuals
|08-23-2010||Water Conservation Memorandum This memo provides an update on California water conditions, compliance with water rationing procedures, and clarification on the state's Model Water Efficient Landscape Ordinance. This document will help you understand and contribute to the Department's commitment to efficiently managing water use within the roadside.|
|06-10-2010||Water Shortage Status Sheet|
|03-04-2010||Caltrans Project Development Procedures Manual Chapter 29 - See Landscape Architecture
Section 2 - Highway Planting Ready to List Certification - Water Use for Planting and Irrigation
|07-18-2008||Caltrans Headquarters Memo to District Offices|
|01-09-2006||Highway Design Manual - See Topic 902.3 Planting Guidelines, and Topic 902.4 Irrigation Guidelines|
|09-01-1993||Water Conservation Deputy Directive (DD-13)|
|07-1998||Assessment of Remote Irrigation Control Systems|
California Water Agencies
The link below lists all of the State's water agencies.
NATIVE GRASS SOD WEBINAR
Water Conservation LINKS
|Click Links for More Information|
|KCRA Sacramento Channel 3 broadcast highlights Caltrans use of automated irrigation controllers to effectively manage water use along Highway 99.|
|Caltrans Native Grass Sod Research
Native grass was found to provide the following benefits:
TransPLANT is an advisory aid to Caltrans Landscape Architects as they select grasses, forbes and other plants for erosion control, revegetation, biofiltration, and other planting work.
Use of transPLANT is intended to supplement, not replace, knowledge of local areas held by District personnel. A visit to the project site is still recommended before the final selection of plant materials is made.
Prepared by University of California Davis, this tool provides a method to select the most appropriate native grass species based upon criteria such as county, rainfall, elevation, and plant community.
From - Landscape Online.com magazine.
How Caltrans designs affordable, attractive, context-sensitive roadsides with low water usage and low maintenance requirements.