"intensive rain" is correct and usable in written English
You can use it to describe a heavy rainfall, for example, "The thunderstorm brought with it intensive rain."
[It was] followed by days of intensive, intensive rain; that Thursday and Friday of last week were just … I've hardly seen so much rain in a long time.
Charles Tucker, chairman of the National Flood Forum which represents 150 community flood action groups, said intensive rain storm events – of which there have been seven since the beginning of June – can strike at any time.
However, the connection between both systems during intensive rain events is highly possible.
The basin is strongly influenced by Mediterranean cyclones during the autumn winter period and experiences dangerous rapid floods, mainly after intensive rain, often combined with snow melt events.
These soils suffer severe erosion as the result of rapid overland flow, wind and intensive rain events typical of southern Guam.
On the contrary, temporal and permanent terrestrial wetlands borderline the salt crust can frequently experience fluctuating salinities, water availability, and also can be connected with hypersaline systems during intensive rain events (El Niño-Southern Oscillation ENSO, Risacher et al. 2003).
Productivity differences of similar soils under intensive rain-fed agricultural use and under grassland land cover vary with the changing availability of precipitation and differences in temperature regimes.
However, intermittent or intensive rains events may actually promote the colonization of several temporal species (Acc: accidental species, Table 2).
The soil is moderately permeable and the infiltration rate can absorb most of the rain except for more intensive rains which can cause considerable surface flow and erosion.
The number itself — and the scientists' confidence in it — is the result of an intensive search of inaccessible rain forests and swamps.
Clear evidence of intensive human impact on rain forest is observed late, c. 1500 years ago, a pattern that is repeated in other parts of Island Southeast Asia.
