جدول السقي هنا.

A natural pronunciation is:

jadwal as-saqy hunā

If you read it with full classical case endings, it would be closer to:

jadwalu s-saqyi hunā

A few pronunciation notes:

• ج is usually pronounced like English j in job in standard learning materials.
• هنا is hunā, with stress on the second syllable.
• In السقي, the ل of ال is not clearly pronounced because س is a sun letter, so ال + سقي sounds like as-saqy.

Because Arabic often uses a nominal sentence in the present tense without a verb meaning to be.

So:

• جدول السقي = the irrigation/watering schedule
• هنا = here

Together, Arabic simply says:

• جدول السقي هنا
• literally: the irrigation schedule here
• naturally in English: The irrigation schedule is here.

This is completely normal in Arabic.

Here, جدول means something like:

• schedule
• timetable
• sometimes table depending on context

In this sentence, because it is followed by السقي, the intended meaning is most naturally schedule:

• جدول السقي = the watering/irrigation schedule

Arabic words often have a range of meanings, and context tells you which one is intended.

السقي means watering or irrigation.

It comes from the root related to giving water. In this sentence, it functions like a noun:

• سقي = watering / irrigation
• السقي = the watering / the irrigation

So جدول السقي is literally schedule of the watering or more naturally the watering schedule.

Because this is an iḍāfa construction, often called a noun + noun “of” phrase.

So:

• جدول السقي = schedule of the irrigation = the irrigation schedule

In an iḍāfa:

• the first noun usually does not take ال
• the second noun can take ال if the whole phrase is definite

So:

• جدول السقي is correct
• الجدول السقي would not be the normal way to form this meaning

That is a key feature of the iḍāfa construction.

In جدول السقي:

• جدول is the first term of the iḍāfa
• السقي is the second term

Rules to remember:

• the first noun does not take ال
• the first noun also does not take tanwīn
• the definiteness of the whole phrase is determined by the second noun

Since السقي is definite, the whole phrase جدول السقي is definite and means:

• the irrigation schedule

not just an irrigation schedule

Because س is a sun letter.

When ال comes before a sun letter, the l sound assimilates to the next consonant. So:

• ال + سقي
• is pronounced as-saqy

The spelling does not change, but the pronunciation does.

This is the same pattern you see in words like:

• الشمس → pronounced ash-shams
• السلام → pronounced as-salām

It is a nominal sentence:

• جدول السقي = the subject/topic
• هنا = the predicate, giving location

More specifically:

• جدول السقي is a noun phrase
• هنا is an adverb of place, but here it functions as the predicate of the sentence

So the structure is basically:

• [subject] + [location]
• The irrigation schedule + here
• natural English: The irrigation schedule is here

Yes, you could.

Both are possible, but the nuance is a little different:

• جدول السقي هنا = The irrigation schedule is here
• هنا جدول السقي = Here is the irrigation schedule / The irrigation schedule is here

Putting هنا first gives more emphasis to the location, a bit like English Here is...

The original sentence is the more straightforward subject-first order.

Yes. In normal unvoweled Arabic writing, the case endings are not written, but they are understood in fully vocalized Arabic.

The fully inflected form would be approximately:

• جَدْوَلُ السَّقْيِ هُنَا

with:

• جدولُ in the nominative, because it is the subject
• السقيِ in the genitive, because it is the second term of an iḍāfa

In everyday reading, learners usually do not pronounce all those endings, but it is useful to know they are there in formal grammar.

It can be a complete sentence.

Arabic often makes complete present-tense sentences without a verb, so جدول السقي هنا is fully valid as:

• The irrigation schedule is here.

But depending on context, the same words could also feel label-like, especially on a sign, notice, or interface.

So it can function either as:

• a full sentence in context
• or a short practical heading/message

Arabic allows that kind of compact expression very naturally.