Ganga flows from Meru parvat but, where is Meru?

Question

Srimad bhagvat mahapuran (5.17.3)

After purifying the seven planets near Dhruvaloka [the polestar], the Ganges water is carried through the spaceways of the demigods in billions of celestial airplanes. Then it inundates the moon [Candraloka] and finally reaches Lord Brahmā’s abode atop Mount Meru.

Srimad bhagvat mahapuran (5.17.5)

On top of Mount Meru, the Ganges divides into four branches, each of which gushes in a different direction [east, west, north and south]. These branches, known by the names Sītā, Alakanandā, Cakṣu and Bhadrā, flow down to the ocean.

Here it says that Ganga flows from meru parvat however, the parvat does not exist where Ganga currently is. So what I want to know exactly is, where is mount meru?

Note: I do not wish to offend anyone regarding my question. Our current thirthas are as holy regardless of their authenticity and I respect their location. Being a Hindu, I would never disrespect any thirth just because they do not match with shastras. Many thirthas have changed locations and this is why I try to find their original location. Sorry if I have offended anybody.

Answer 1

where is mount meru?

The answer itself is given in Shreemad Bhagvatam Skanda 5 Chapter 16 Shlokas 5 to 7. ( A Description of Jambūdvīpa). Its told in bhagvatam that Among Bhumandala there are seven dweepas.The innermost Kosha is "Jambudweepa" .At the center of "Ilavruta" varsha this "Meru Mountain is situated"

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यो वायं द्वीप: कुवलयकमलकोशाभ्यन्तर-कोशो  
  नियुतयोजनविशाल: समवर्तुलो यथा पुष्करपत्रम् 5॥॥

yo vāyaṁ dvīpaḥ kuvalaya-kamala-kośābhyantara-kośo niyuta-yojana-viśālaḥ samavartulo yathā puṣkara-patram.

Meaning - The planetary system known as Bhū-maṇḍala resembles a lotus flower, and its seven islands resemble the whorl of that flower. The length and breadth of the island known as Jambūdvīpa, which is situated in the middle of the whorl, are one million yojanas [eight million miles]. Jambūdvīpa is round like the leaf of a lotus flower. SB 5.16.5

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यास्मिन्नव वर्षाणि नवयोजनसहस्त्रायामान्यष्टभि  
     र्मर्यादागिरिभि: सुविभक्तानि भवन्ति ॥6॥

yasmin nava varṣāṇi nava-yojana-sahasrāyāmāny aṣṭabhir maryādā-giribhiḥ suvibhaktāni bhavanti.

Meaning -In Jambūdvīpa there are nine divisions of land, each with a length of 9,000 yojanas [72,000 miles]. There are eight mountains that mark the boundaries of these divisions and separate them nicely. SB 5.16.6

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ऐषां मध्ये इलावृतं नामाभ्यन्तरवर्षं यस्य 
  नाभ्यामवस्थित: सर्वतः सौवर्ण: कुलगिरिराजो 
  मेरुर्द्विपायामसमुन्नाह: कर्णिकाभूतः कुवलय  
  कमलस्य मूर्धनि द्वात्रिंशत सहस्त्रयोजनविततो मूले  
  षोडशसहस्त्रं तावतान्तर्भुम्यां प्राविष्ठ:॥7॥

eṣāṁ madhye ilāvṛtaṁ nāmābhyantara-varṣaṁ yasya nābhyām avasthitaḥ sarvataḥ sauvarṇaḥ kula-giri-rājo merur dvīpāyāma-samunnāhaḥ karṇikā-bhūtaḥ kuvalaya-kamalasya mūrdhani dvā-triṁśat sahasra-yojana-vitato mūle ṣoḍaśa-sahasraṁ tāvat āntar-bhūmyāṁ praviṣṭaḥ.

Meaning- Amidst these divisions, or varṣas, is the varṣa named Ilāvṛta, which is situated in the middle of the whorl of the lotus. Within Ilāvṛta-varṣa is Sumeru Mountain, which is made of gold. Sumeru Mountain is like the pericarp of the lotuslike Bhū-maṇḍala planetary system. The mountain’s height is the same as the width of Jambūdvīpa — or, in other words, 100,000 yojanas [800,000 miles]. Of that, 16,000 yojanas [128,000 miles] are within the earth, and therefore the mountain’s height above the earth is 84,000 yojanas [672,000 miles]. The mountain’s width is 32,000 yojanas [256,000 miles] at its summit and 16,000 yojanas at its base.

SB 5.16.7

Answer 2

In Yogic text Shiv Samhita, there is mention of Meru Parvat

CHAPTER II

(1) The Microcosm.

1. In this body, the mount Meru - i.e., the vertebral column - is surrounded by seven islands; there are rivers, seas, mountains, fields; and lords of the fields too.

2. There are in it seers and sages; all the stars and planets as well. There are sacred pilgrimages, shrines; and presiding deities of the shrines.

3. The sun and moon, agents of creation and destruction, also move in it. Ether, air, water and earth are also there.

(2) The Nerve Centers.

4. All the beings that exist in the three worlds are also to be found in the body; surrounding the Meru they are engaged in their respective functions.

5. (But ordinary men do not know it). He who knows all this is a Yogi; there is no doubt about it.

6. In this body, which is called Brahmanda (microcosm, literally the mundane egg), there is the nectar-rayed moon, in its proper place, on the top of the spinal cord, with eight Kalas (in the shape of a semi-circle).

7. This has its face downwards, and rains nectar day and night. The ambrosia further sub-divides itself into two subtle parts:

8. One of these, through the channel named Ida, goes over the body to nourish it, like the waters of the heavenly Ganges - certainly this ambrosia nourishes the whole body through the channel of Ida.

9. This milk-ray (moon) is on the left side. The other ray, brilliant as the purest milk and fountain of great joy, enters through the middle path (called sushumna) into the spinal cord, in order to create this moon.

10. At the bottom of the Meru there is the sun having twelve Kalas. In the right side path (Pingala) the lord of creatures carries (the fluid) through its rays upwards.

11. It certainly swallows the vital secretions, and ray-exuded nectar. Together with the atmosphere, the sun moves through the whole body.

12. The right-side vessel, which is pingala is another form of the sun, and is the giver of nirvana. The lord of creation and destruction (the sun) moves in this vessel through auspicious ecliptical signs.