Zone Name [ Cannot Include : ; ( ) “ ’
] (What's This?
Enter a zone name. SIP Advanced Watering allows you to calculate the water need for more than one sprinkler zone or you can choose to treat your lawn as one big zone.
User Collected rainfall [Optional] (What's This?
Rainfall data for calculating lawn water use is measured at the selected Oklahoma Mesonet site.
If you collect your own rainfall, enter the amount here for the period since you last watered your lawn.
Lawn care level (What's This?
A high lawn care level is used for high traffic and/or high visibility lawn areas.
The grass needs to be maintained so that it experiences only occasional water stress.
High visual quality is very important.
A moderate lawn care level fits most home lawn situations. Lawn appearance is not as
critical and some water stress is acceptable. The reduced visual quality is balanced
with lower fertilizer and water rates.
A low lawn care level is for areas where the need to reduce water is more important
than grass visual quality. This level is used to maintain some grass greenness, while
keeping water use low.
Clay particles are small and adhere to each other. Clay goes from very wet to very dry quickly
and is hard to work. Its water holding capacity for plants is considerably less than loam, because
the water is held so tightly. Clay has a slow water infiltration rate and drains poorly. When wet,
clay soils squeezed between thumb and forefinger will form a ribbon over 2 inches long.
The smaller particles of silty clay reduce its water holding capacity and slows water
infiltration and drainage. When wet, silty clay soils squeezed between thumb and forefinger
will form a ribbon 1.5 to 2 inches long.
Loam is the ideal soil for plants. It has good water holding capacity and good drainage.
Water infiltrates well. It feels like it contains an even mix of sand, silt and clay.
Sandy loam has more water holding capacity than sand, but less than loam. Sandy loams drain
well. Sandy loam soils have a refined gritty feel.
Sand is made up of large, granular particles. Water infiltrates rapidly and drains from
the soil quickly, so sandy soils have a low water holding capacity. Sand has a gritty feel.
Soil slope (What's This?
FLAT TO SLIGHT INCLINE:
Areas in this group go from no incline up to slopes of 12.5 degrees or 22%.
A 12.5-degree slope drops one foot in 4 feet 6 inches.
MILD TO MODERATE INCLINE:
Areas in this group have slopes of 12.5 degrees or 22% to slopes of 20 degrees or 36%.
A 12-degree slope drops one foot in 5 feet, while a 20-degree slope drops one foot in 2 feet 8 inches.
Areas in this group have slopes above 20 degrees or 36%. A 20-degree slope drops one foot in 2 feet 8 inches.