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Posted on: July 10, 2018

Stage 3 Mandatory Water Restrictions

Based on the City of Llano’s Water Conservation and Drought Contingency Plan, effective immediately we are moving to Stage 3 of mandatory water restrictions as defined in the Plan.  If you have any questions or need more information about the watering restrictions for Stage 3, please visit the City of Llano’s website or contact the office at 325-248-4158 ext. 101.


Stage 3 Triggers – Severe Water Shortage Conditions


Discharge information for the Llano River at Junction and the Llano River at Mason can be utilized to predict in March that the City of Llano is very likely to reach at least Stage 3 in this Drought Plan. Based on an analysis of historical monthly flow data for the Junction and Mason gauges, the following guidelines can be used to predict Stage 3 drought conditions: If 1) the average February monthly flow for Junction is 75 cfs or less; or 2) the average of the monthly flows from August to February at Junction is 85 cfs or less; or 3) the average February monthly flow for Mason is 130 cfs or less, than it can be predicted that the 7-day moving average daily discharge of the Llano River at Llano will be 21 cfs or less during the coming summer.


The utilization of these guidelines since 1940 would have correctly predicted 17 of 19 low-flow (21 cfs or less) events for the Llano River at Llano, with no false predictions.  The low-flow conditions of 1985 would not have been predicted due to high flows in December.  It is not determined why the low-flow conditions of 1967 would not have been predicted.


If it becomes apparent from this predictive scenario, or from other observations, that Severe Water Shortage Conditions are likely to occur, the following is recommended:

     LCRA or USGS be requested to calibrate the Llano River at Llano and Llano River at Mason, Texas stream flow gauge to ensure its accuracy.

     The Emergency Water Shortage Plan (to be prepared) be evaluated to ensure that all planning options are available as needed.


Requirements for Initiation:

Customers shall be required to comply with the requirements and restrictions on certain non-essential water uses for Stage 3 of this Ordinance when:

  1. The 7-day moving average daily discharge of Llano River at Llano is equal to or less than 21 cubic feet per second (cfs) and the Stage 3 pumpage goal is exceeded for 4 consecutive days.

If Stage 2 has not been initiated, the Stage 3 requirements for initiation shall initiate Stage 2 restrictions for 7 days prior to initiating Stage 3.  If the Stage 3 pumpage goal can be met within those 7 days, Stage 2 restrictions remain in effect until both requirements for initiation of this section are met.

OR

       2.  The Goal for Stage 2 cannot be met under Stage 2 Restriction.


Requirements for Termination:

Stage 3 of the Ordinance may be rescinded when the average daily discharge of the Llano River at Llano exceeds 75 cfs for seven (7) consecutive days or 150 cfs for five (5) consecutive days.   The Mayor or City Manager may rescind Stage 3 of this Ordinance at any time. Upon termination of Stage 3, Stage 2 becomes operative. Important Note: Care should be exercised not to move from Stage 3 to Stage 1, just because the discharge of the River exceeds 150 cfs for 5 days.  Discharge data should be evaluated to ensure that discharge levels are stabilizing or increasing before Stage 2 is repealed. When base flows are low, the River can quickly return to Stage 3 levels, even after a significant rainfall event that produces large discharge volumes.


Stage 3 Response – Severe Water Shortage Conditions


Goal:   Limit the daily pumpage at the water treatment plant to 0.8 million gallons per day.


Water Use Restrictions:  All requirements of Stage 2 shall remain in effect during Stage 3 except:

  1. Irrigation of landscaped areas shall be limited to twice per week on designated watering days between the hours of 6:00 AM and 10:00 AM and between 8:00 PM and 12:00 Midnight, and shall be by means of a hand-held hose, a faucet-filled bucket or drip irrigation system only.  The use of hose-end sprinklers or permanently installed automatic sprinkler systems are allowed once per week according to the following schedule:

Hand-held/Drip Irrigation           

Even Addresses                                              Thursday                     and/or              Sunday
Odd Addresses                                               Wednesday                 and/or              Saturday

Commercial, Recreational, Multi-Family         Tuesday                       and/or              Friday


Hose-end Sprinklers or Sprinkler Systems

Addresses Ending in                                                                      Allowed Day

            0,2 or 4                                                                               Sunday

            1 or 3                                                                                  Saturday

            6,8                                                                                      Thursday

            5,7,9                                                                                   Wednesday

            Commercial, Multi-family even address                             Tuesday

            Commercial, Multi-Family odd address                              Friday


  1. The watering of golf course fairways is allowed once per week on designated days.

The watering of greens on an as need basis is limited to between the hours of 6:00 AM and 10:00 AM and between 8:00 PM and 12:00 Midnight by sprinkler system; and hand-held hose between the hours of 10:00 AM and 8:00 PM.

  1. The use of water for construction purposes from designated fire hydrants under special permit is to be discontinued.
  1. Use of water to wash any motor vehicle, motorbike, boat, trailer, airplane or other vehicle not occurring on the premises of a commercial car wash and commercial service stations and not in the immediate interest of public health, safety, and welfare is prohibited.  Further such vehicle washing at commercial car washes and commercial service stations shall occur only between the hours of 6:00 AM and 10:00 AM and between 8:00 PM and 12:00 Midnight.

  2. Use of water to fill, refill, or add to any indoor or outdoor swimming pools, wading pools, or Jacuzzi-type pools is prohibited except on designated watering days between the hours of 6:00 AM and 10:00 AM and between 8:00 PM and 12:00 Midnight.
  1. The operation of any ornamental fountain or pond for aesthetic or scenic purposes is prohibited except where necessary to support aquatic life or where such fountains or ponds are equipped with a recirculation system. Refilling of fountains or ponds equipped with a recirculation system is prohibited except on designated watering days between the hours of 6:00 AM and 10:00 AM and between 8:00 PM and 12:00 Midnight.


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