El humedal tiene mucha agua.

El is the definite article, meaning the. It refers to a specific wetland, not just any wetland.

• el humedal = the wetland
• un humedal = a wetland

So the sentence is talking about a particular wetland.

Yes, humedal is masculine, which is why it uses el.

There is no perfect rule for every noun, but many nouns ending in -al are masculine:

• el hospital
• el animal
• el canal
• el humedal

The article is often the clearest clue, so seeing el humedal tells you the noun is masculine.

Tiene is the third-person singular present tense form of tener.

The verb tener means to have. Its present-tense forms include:

• yo tengo = I have
• tú tienes = you have
• él / ella / usted tiene = he / she / you have

Since el humedal is a singular subject, Spanish uses tiene.

This is a very common question.

• tener means to have
• hay means there is / there are

In El humedal tiene mucha agua, the wetland is treated as the subject and is said to have a lot of water.

You could also say:

• En el humedal hay mucha agua = There is a lot of water in the wetland.

Both are natural, but they are structured differently:

• El humedal tiene... focuses on the wetland.
• En el humedal hay... focuses on the existence of water there.

Because agua is a feminine noun, and mucha must agree with it.

• mucho = masculine singular
• mucha = feminine singular
• muchos = masculine plural
• muchas = feminine plural

So:

• mucha agua = a lot of water

Even though you often see el agua, the noun agua is still feminine.

Excellent question. Agua is feminine, but in the singular it often uses el instead of la because it begins with a stressed a sound.

So Spanish prefers:

• el agua
• el alma
• el águila

This is only for pronunciation and ease of speaking. The noun is still feminine, so other words still agree in the feminine:

• el agua fría
• mucha agua
• el alma buena

So in your sentence, mucha is feminine because agua is feminine.

Because mucho/mucha here is not really a normal descriptive adjective like grande or fría. It is acting as a quantifier, meaning a lot of.

In Spanish, quantifiers like this usually go before the noun:

• mucha agua
• mucho tiempo
• muchas personas

By contrast, descriptive adjectives often come after the noun:

• agua fría = cold water
• humedal grande = big wetland

Yes. That is a very natural alternative.

• mucha agua = a lot of water
• un montón de agua = a lot of water / loads of water

The second version is a bit more informal and expressive. Both are correct.

Because agua is usually treated as an uncountable noun, like water in English.

So Spanish normally says:

• mucha agua = a lot of water

Not usually:

• muchas aguas

The plural aguas does exist, but it is used in more specific contexts, such as types of water, bodies of water, or fixed expressions. In an everyday sentence like this one, singular agua is the normal choice.

Yes, but the basic order here is the most neutral and natural:

• El humedal tiene mucha agua.

Spanish can change word order for emphasis, but that usually sounds more marked or literary. For example:

• Mucha agua tiene el humedal.

This puts extra emphasis on mucha agua, but it is less neutral than the original sentence. For most learners, the original order is the one to use.

In standard Spanish pronunciation:

• h is silent
• humedal is pronounced roughly oo-meh-DAL

The stress is on the last syllable: -dal

And tiene is pronounced roughly TYEH-ne.

So the whole sentence sounds approximately like:

el oo-meh-DAL TYEH-ne MOO-cha AH-gwa

That is only an approximation for English speakers, but it gives you the main idea.