Dear Wang

Is your question is for specific area or in general?  If it is for general you have to collect all the following data first:

1- Real time data for rainfall  it is better to be on a relatively very small intervals (1 minute, 5 minutes,...etc).

2- Define the storm pattern correctly.

3- Real time data for GW reservoir monitoring pizo-meters.

4- Land use map for the watershed and the GW aquifer,

5- Geological map for surface features, faults, cracks,...etc

6- define the areas where a hydrological/hydrogeological connections are most probably exist.

7- derive a relationship between the GW fluctuation and surface flow via new Neural Network approach since it will be very difficult to use a numerical model (finite element or finite difference) to solve such problem.

Dear Xihua,

we produced an archive of data concerning flood events and coincident piezometric levels for small (< 1 km2) catchments. Relevant papers are here:

PENNA, D., N. MANTESE, L. HOPP, G. DALLA FONTANA, M. BORGA, 2015: Spatio-temporal variability of piezometric response on two steep alpine hillslopes. Hydrological Processes, 29, 198–211.

PENNA, D., H.J. TROMP-VAN MEERVELD, A. GOBBI, M. BORGA, G. DALLA FONTANA, 2011: The influence of soil moisture on threshold runoff generation processes in an alpine headwater catchment. Hydrology and Earth System Sciences,15, 689-702, ISSN: 1027-5606.

Part of these data may be exchanged for research purpose,

best

Marco Borga

Hi If you need groundwater data in China, it is classified as secret, both for geological data and environment data. Geological data is considered as nation's secret since President Mao, though now less strict still a strict controled database. Environmental data is only recently kept secret due to broader worrying about our severe pollution.

China runs national groundwater investgition as part of national research grants. I was working for a nation-owned company to do a map of a regional groundwater investigation.

You should approach your supervisor in CAGS, he certainly has credible data sources.Check your internal library, too.