I want to know about Indus Valley?

Question

1. what problems can monsoons cause,
2.how were the planned cities of the Indus Valley different from other early cities

Answer 1

Here's a non-Wiki site that I like.
Very interesting ancient civilization.
Monsoons rains can cause flooding - not sure what else you might be looking for there.
Excerpt from source listed follows :
Civilization first developed in the Indus River valley in present-day Pakistanin the middle of the 3d millennium B.C., more than a thousand years earlier than it did in China. In fact, the civilization of the Indus valley, usually called Harappan after its chief city, rivals Sumer and Egypt as humanity's oldest. But like Sumer and its successor civilizations in the Middle East, Harappan civilization was unable to survive natural catastrophes and nomadic
invasions. In contrast to the civilization of the Shang rulers in China around 1500 B.C., Harappa vanished from history. Until the mid-19th century it was "lost" or forgotten, even by the peoples who lived in the vicinity of its sand-covered ruins. Important elements of Harappan society were transmitted to
later civilizations in the Indian subcontinent. But unlike the Shang kingdom,Harappa did not survive to be the core and geographical center from which a unified and continuous civilization developed like that found in China. The
difference in the fate of these two great civilizations provides one of the key questions in dealing with the history of civilized societies: What factors permitted some civilizations to endure for millennia while others rose and fell within a few centuries?
Between about 1500 and 1000 B.C., as the great cities of the Indus region crumbled into ruins, nomadic Aryan invaders from central Asia moved into the fertile Indus plains and pushed into the Ganges River valleys to the east. It took these unruly, warlike peoples many centuries to build a civilization that rivaled that of the Harappans. The Aryans concentrated on assaulting Harappan settlements and different Aryan tribal groups. As peoples who depended primarily on great herds of cattle to provide their subsistence, they had little use for the great irrigation works and advanced agricultural technology
of the Indus valley peoples. Though they conserved some Harappan beliefs and symbols, the Aryan invaders did little to restore or replace the great cities and engineering systems of the peoples they had supplanted.
Eventually, however, many of the Aryan groups began to settle down, and increasingly they relied on farming to support their communities. By about 700 B.C., their priests had begun to orally record the sacred hymns and ritual incantations that had long been central to Aryan culture.
In the following centuries, strong warrior leaders built tribunal units into larger kingdoms. The emergence of priestly and warrior elites signaled the beginning of a new pattern of civilization in South Asia. By the 6th century B.C., the renewal of civilized life in India was marked by the emergence of great world religions, such as Hinduism and Buddhism, and a renewal of trade, urban life, and splendid artistic and architectural achievements.

This section from the Wikipedia is also useful for your topic on the cities. {Some people think the Wiki is a poor source, but I've found it to be very useful and usually accurate.}

Cities

A sophisticated and technologically advanced urban culture is evident in the Indus Valley Civilization. The quality of municipal town planning suggests knowledge of urban planning and efficient municipal governments which placed a high priority on hygiene. The streets of major cities such as Mohenjo-daro or Harappa were laid out in perfect grid patterns. The houses were protected from noise, odors, and thieves.[citation needed]

As seen in Harappa, Mohenjo-daro and the recently discovered Rakhigarhi, this urban plan included the world's first urban sanitation systems. Within the city, individual homes or groups of homes obtained water from wells. From a room that appears to have been set aside for bathing, waste water was directed to covered drains, which lined the major streets. Houses opened only to inner courtyards and smaller lanes. The house-building in some villages in the region still resembles in some respects the house-building of the Harappans.[29]

The ancient Indus systems of sewerage and drainage that were developed and used in cities throughout the Indus region were far more advanced than any found in contemporary urban sites in the Middle East and even more efficient than those in some areas of Pakistan and India today. The advanced architecture of the Harappans is shown by their impressive dockyards, granaries, warehouses, brick platforms and protective walls. The massive citadels of Indus cities, which protected the Harappans from floods and attackers, were larger than most Mesopotamian ziggurats.[citation needed]

The purpose of the citadel remains debated. In sharp contrast to this civilization's contemporaries, Mesopotamia and Ancient Egypt, no large monumental structures were built. There is no conclusive evidence of palaces or temples - or of kings, armies, or priests. Some structures are thought to have been granaries. Found at one city is an enormous well-built bath, which may have been a public bath. Although the citadels were walled, it is far from clear that these structures were defensive. They may have been built to divert flood waters.

Most city dwellers appear to have been traders or artisans, who lived with others pursuing the same occupation in well-defined neighborhoods. Materials from distant regions were used in the cities for constructing seals, beads and other objects. Among the artifacts discovered were beautiful beads of glazed stone called faïence. The seals have images of animals, gods and other types of inscriptions. Some of the seals were used to stamp clay on trade goods and most probably had other uses.

Although some houses were larger than others, Indus Civilization cities were remarkable for their apparent egalitarianism. All the houses had access to water and drainage facilities. This gives the impression of a society with low wealth concentration.

Answer 2

What Problems Can Monsoons Cause

Answer 3

dry river beds overlapping with the Hakra channel in Pakistan and the seasonal Ghaggar River in India