Subject
Geology
210
Groundwater
127
Water quality
115
Kansas
93
Geology, Stratigraphic
79
Water-supply
72
Kansas History
64
Natural gas
38
Aquifers
36
Building materials
34
Kansas Description and travel
34
Geochemical prospecting
33
Petroleum
32
Water table
31
Floods
30
Streamflow
29
Stream measurements
28
Groundwater Quality
27
Frontier and pioneer life
26
Water Pollution
24
Paleontology
23
Water resources development
23
Hydrogeology
21
Mines and mineral resources
20
High Plains Aquifer
19
Hydrology
18
Kansas Politics and government
18
Reservoir sedimentation
18
Oil fields
17
Water quality management
16
Borings
15
Groundwater Pollution
15
Groundwater flow
15
Wildlife refuges
15
Gold mines and mining
13
Spectrum analysis
13
Artificial groundwater recharge
12
Petrology
12
Quivira National Wildlife Refuge (Kan.)
12
Road materials
12
Sanitary landfills Environmental aspects
12
Coal
11
Petroleum mining
11
Suspended sediments
11
Tallgrass Prairie National Preserve (Kan.)
11
Water consumption
11
Contaminated sediments
10
Flood control
10
Geology, Structural
10
Historic sites
10
more ...