by Charlene Burgi
This week a friend sent an email containing a test that challenged the reader’s knowledge of science. I dropped all that I was doing and quizzed myself before sending it on to my daughter, son and Jack with my results. The gauntlet was officially thrown down and the game was on!
It seems the family loves these challenges, as we all get caught up in self-testing. It made me wonder if you, too, enjoy seeing just how much you know? Are you in? Okay, I am throwing down the gauntlet! Answers will be found at the end of the blog. No fair checking our website or internet for answers first!
1. How many water supply reservoirs does MMWD maintain on the Mt. Tamalpais Watershed and in West Marin? Extra points if you can name them all.
d. None of the above
2. Which sprinkler heads are most efficient on a slope?
a. Impact heads
b. MP Rotators
c. Spray heads
3. It is acceptable to mix various types of sprinkler heads on the same valve.
4. It is best to use pressure-compensating emitters on a slope.
5. As a whole, we use more water:
a. Washing clothes
b. Flushing toilets
c. Watering lawns
d. Taking showers
6. Clay soil doesn’t have any nutritional value.
7. All native plants are low-water users.
8. Evapotranspiration refers to:
a. Loss of water from the soil
b. Loss of water from plants
c. Both a and b
d. None of the above
9. The evapotranspiration rate is highest in:
a. Mid August
b. Beginning of September
c. End of April
d. End of June
10. Toilet leaks can waste as much as
a. 1 gallon a day
b. 15 gallons a month
c. Too small to measure
d. 500 gallons a day
The next step we take in the family is to share our answers and where we got hung up. It opens up the discussion! Did you learn anything or was this just too easy? Did you share this test with your family, too?
Join Us for the Marin-Friendly Garden Tour on Saturday, May 18
If you haven’t registered for tomorrow’s Marin-Friendly Garden Tour, it’s not too late! This FREE, self-guided tour showcases nine Marin gardens designed to protect our local environment and conserve water. Discover native plant selections, edibles, rainwater catchment, wildlife habitat gardens, recycled materials, composting systems and more. Visit our website for last-minute registration details.
1. – b. MMWD’s reservoirs include Phoenix, Lagunitas, Bon Tempe, Alpine, Kent, Nicasio and Soulajule.
2. – b. Slow precipitation rates of the MP Rotators will allow the water to penetrate instead of run off.
3. – b. Each type of head throws out different gallons per minute, causing some areas to get too much water and other areas not enough–what we call a lack of distribution uniformity.
4. – a. Non-compensating emitters will lead to water running out faster at the bottom of the slope, leaving little emitting at the top.
5. – c. Lawns use the highest amount of water.
6. – b. Clay has nutrients trapped in its particles. Adding amendments can break down the particles and release the nutrients for plant needs.
7. – b. There are many aquatic native plants.
8. – c. Soil loses moisture through evaporation; plants lose water through transpiration.
9. – d. On average, plants require more water at the end of June than any other time of year.
10. – d. Can you believe that! You can lose up to 500 gallons a day!!