Monday, November 30, 2009

Big surf may mean future rains?


Thanksgiving brought another round of waves to Ventura Point. The holiday weekend brought out the crowds too. Large, powerful Pacific swells create a current that sweeps through the pier, a hazard to the inexperienced surfer. According to the newspaper, lifeguards had 22 rescues over Thanksgiving, and even discussed 'closing' the point to surfing.

Winter swells are formed by storms tracking across the Pacific Ocean, blowing gales over a long 'fetch' of open ocean. Whether or not we get rain is dependent on where these storms make landfall. Often a high pressure off the west coast will turn the storms northward, with Portland/Seattle getting all the rain. This high pressure is common in 'La Nina' years.

'El Nino' is the phenomenon that historically brings us rain. Forecasters are predicting that this year may see a 'moderate' El Nino. This means we will likely see 'more consistent and larger surf than has been seen in the past 3+ years, and perhaps better than anything in the last 10+ years.'

But 'moderate' may still result in a storm track that veers north as it approaches the coast. Good weather for surfing, perhaps not so good for farming. Or, if these early swells are any indication, we may see a repeat of 1998 which recorded some of the highest rainfall of the past century.

Lots more info on El Nino at Stormsurf.com

Ojai Groundwater Studies


A recent article in the Ojai Valley News describes a study of the Ojai groundwater basin that recently gained funding from the State Dept of Water Resources (DWR.) The $219,000 grant administered by the Ojai Basin Groundwater Management Agency (OBGMA) will help advance the understanding of how the Ojai groundwater basin works. The study will help plan for water management, especially under the drought conditions that create conflict in the valley.

The project consultant gave an overview of the evolving understanding of the groundwater basin at the October meeting of the Ventura River Watershed Council. These graphics are courtesy of Jordan Kear.


The Ojai valley relies upon groundwater for much of its water supply. Under natural conditions, rainfall soaks into the ground filling in spaces within the soil and rock. This groundwater reserve is called an aquifer. Over 200 wells extract water for agriculture, residential, and other uses such as the two golf courses in the valley.


The modeling effort is aimed at providing a better understanding of how the basin recharges during the short rainy season, and how the many wells interact. With better understanding, it is hoped that well operators may cooperate to enhance the overall basin yield. (When wells run dry, users have to purchase water from Casitas Water District, which provides a backup supply of 254,000 acre-feet in Lake Casitas.)

Since aquifers are often connected to surface water, wells can also reduce flows in nearby rivers and streams, which downstream uses rely upon. So groundwater management is also a critical piece of overall ecosystem-based management for the watershed.

Friday, November 27, 2009

H2O project update

The Know Your H2O project is moving forward. Our chapter helped co-sponsor the creation of a flash-video production that describes the 'Cycle of Insanity' that is our current water management system...



More info on the KYH2O blog linked here

Monday, November 23, 2009

manure solution?

Folks in Ojai have been researching potential solutions to the manure problem.

One big idea is creating marketable products from the waste, and in the process make a big step toward local sustainability. In this case, a BioDigester that would process collected manure and green waste into bioGas for use in vehicles or electricity generation. And the remaining solid waste would provide seed-free nutrients for local agriculture, further offsetting the use of petroleum-based fertilizers in the valley.

The Bio-digestion Plant would provide the following benefits:

  • Local option for disposal
  • Methane is used directly for energy
  • Compost is sterilized
  • Nutrients concentrated in liquid fertilizer
  • Nutrients removed from stormwater runoff
  • Greenhouse gases reduced (less methane released to the air)
  • Less truck traffic/ transportation to disposal sites
  • Reduced demand for fossil fuel energy
  • Reduced demand on landfills
  • Creates local jobs
  • Creates educational example for energy independence and use of local resources
This is not a cheap project, but a local bioGas generation plant could solve multiple social and economic problems - the 'triple bottom line' of "people, planet, profit"

A UC Davis program has demonstrated the feasibility of the technology in partnership with Onsite Power Systems

more here:




Seems like a big opportunity for a smart investor... Others in Ventura County are already doing this, and winning awards while making money in the process: http://www.vcstar.com/news/2009/nov/18/toland-road-landfill-making-money-and-energy/

For more information on the Ojai project please contact Bill O'Brien/Phil Sherman 805-658-6611

the manure problem

Horses are a way of life in the Ojai Valley, but the waste they generate has long been recognized as a potential water quality problem. The issue is nutrient-rich manure that is often disposed of adjacent to or sometimes in the creeks throughout the watershed. This elevates nitrogen levels in the water, which leads to excess algae. See previous blog post here.

A preliminary survey was recently conducted to evaluate the scale of the problem. The results were submitted in a memo to the Regional Water Quality Control Board who are currently considering regulatory approaches for the Algae TMDL.

According to the memo, the study was based on information from horse owners, site visits to the main horse locations, and well known horse locations. Based on this survey, there were 62 horses counted within the City limits of Ojai. And valleywide, excluding the upper Ojai Valley, the numbers shown on this map total 792 horses.
The memo further states:

It is believed that considerably more horses could be located with a more detailed survey. A more detailed survey would take many field trips and review of aerial photography. The detailed survey should yield at least twice the number horses shown in this preliminary survey. Many of the horses that are not yet counted will likely be on locations with 1-5 horses. Funding for a detailed survey has yet to be obtained.
At this time, the best estimate for total horses in the Ojai Valley (excluding the upper Ojai Valley) is 2000-3000 horses. If each horse has 30 lbs/day of solid waste*, that equates to 30-45 tons/day of horse manure.

*A 1,000 lb horse produces about 31 lbs of feces and 2.4 gallons of urine daily, which totals 51 lbs of waste per day. Pennsylvania State College of Agriculture Sciences study “Horse Stable Manure Management”

Ventura River Watershed Protection Project


Ventura River Watershed Protection Project (V1)

This is a $2.1 million project that includes several components:
  • Formation of a Watershed Council, drawn from diverse local stakeholders, to address resource issues facing the watershed and to act as the decision-making body for plan development and project implementation;
  • Compilation of published materials related to the watershed in order to form a single database and to identify gaps in information;
  • Development of a watershed characterization baseline planning document utilizing already existing studies and initiating specific new studies as needed to give a picture of the watershed and its needs;
  • Identification of problem areas within the watershed with preliminary suggestions on how to best address them;
  • Development of an action plan to set priorities for implementation of project solutions for identified problems; and
  • Development of mechanisms to keep the public aware of the progress and implementation of the protection plan.
One of the primary efforts is the Ventura River HSPF Modeling Project. This is a computer model under development by Tetra Tech consultants. According to reports, 'The Ventura County Watershed Protection District has contracted with Tetra Tech to develop a hydrologic model for the Ventura River watershed, using EPA’s Hydrologic Simulation Program – FORTRAN (HSPF) model. The work, funded under a Proposition 50 grant, will result in the completion of a Baseline (existing condition) hydrologic model as well as a Natural Condition scenario. These model runs can be used to support a variety of water availability and storm flow analyses. In addition, the hydrologic model will provide a platform for future modeling of water quality constituents in the Ventura River.'

More info and documents are available here

BACKGROUND: In November 2002, California voters approved Proposition 50. This legislation provides $500 million in water-related grants. In 2008, the Watersheds Coalition of Ventura County was awarded a $25 million grant. More info: Prop 50 Implementation Grant

San Antonio Creek Spreading Grounds



San Antonio Creek Spreading Grounds Rehabilitation Project (V-2)

BACKGROUND
The 'spreading grounds' historically existed to recharge groundwater in the Ojai basin using water delivered through the Matilija Conduit from Matilija reservoir. This was the primary intent of Matilija Dam when constructed in 1948, but the practice was discontinued with the construction of Casitas reservoir in 1956.

PROJECT DESCRIPTION
This project would rehabilitate the historic spreading grounds to enhance groundwater recharge using water diverted from upper San Antonio Creek below Senior Canyon. The project includes construction of recharge wells, as well as a monitoring well.

PROJECT GOALS
• Diversion of a portion of the precipitation that is typically lost from within the San Antonio Creek Sub-Watershed to the rehabbed spreading grounds using project facilities.
• Increase the groundwater recharge and storage in the Ojai Valley Groundwater Basin (OVGB), thereby enhancing the reliability of production from local water supply wells.
• Reduce local reliance on already-limited surface water supplies from the Casitas Municipal Water District (CMWD.)




A stakeholder group inclusive of the Ojai Basin Groundwater Management Agency, the Ojai Water Conservation District, the Golden State Water Company, the Casitas Municipal Water District, and the Ventura County Watershed Protection District is working cooperatively to complete this groundwater recharge and supply project.



The $1.4 Million project is funded by the combination of a $1.3 Million Prop 50 Implementation Grant from the State of California and approximately $100,000 in local match contributions from the five stakeholders.

Watersheds Coalition website