KDP categories · Top KDP authors
Groundwater & Flood Control: Amazon KDP category data
Amazon Books Best Sellers data for Groundwater & Flood Control, updated Nov 2, 2026: median price $67.17, median 4 reviews, average rating 4.4 and a KDPTop opportunity score of 26/100 (highly competitive).
| Price range (middle 50%) | $27.23 – $98.71 |
|---|---|
| Average rating | 4.4 |
| New releases (90 days) | 5% |
| Books on the list | 100 |
| Store | Books |
What stands out
- Its median reviews are 1% of the parent category Environmental (310), one of the easier corners under it.
- At $67.17 its median price beats 98% of Books categories, leaving more margin per copy.
- Its review barrier is lower than in 92% of Books categories: the median best seller has only 4 reviews, so new books can chart with few.
Top 10 Groundwater & Flood Control best sellers
-
The Johnstown Flood
- List rank#1
- Price$14.95
- Rating4.5
- Reviews3,881
-
Water Storage: Tanks, Cisterns, Aquifers, and Ponds for Domestic Supply, Fire and Emergency Use--Includes How to Make Ferrocement Water Tanks
by Art Ludwig
- List rank#2
- Price$18.59
- Rating4.5
- Reviews406
-
PE Civil Water Resources and Environmental Exam Prep: The Most Complete Study Guide with Practice Problems, Detailed Solutions & Full Exams to Get Ready in No Time and Pass with Confidence
by Learnova
- List rank#3
- Price$58.10
- Rating4.5
- Reviews60
-
Where the Water Goes: Life and Death Along the Colorado River
by David Owen
- List rank#4
- Price$4.99
- Rating4.5
- Reviews529
-
The End of the River
- List rank#5
- Price$2.99
- Rating4.2
- Reviews191
-
Harvesting Rainwater for Your Homestead in 9 Days or Less: 7 Steps to Unlocking Your Family's Clean, Independent, and Off-Grid Water Source with the QuickRain Blueprint
by Renee Dang
- List rank#6
- Price$23.99
- Rating4.7
- Reviews453
-
Running Out: In Search of Water on the High Plains
by Lucas Bessire
- List rank#7
- Price$18.66
- Rating4.5
- Reviews92
-
PPI PE Civil Water Resources and Environmental Review Manual — A Comprehensive Review Manual for the 2024 NCEES PE Civil Water Resources and Environmental Exam
by Guy J. Graening PE
- List rank#8
- Price$232
- Rating4.6
- Reviews27
-
Words Whispered in Water: Why the Levees Broke in Hurricane Katrina (Natural Disaster, New Orleans Flood, Government Corruption)
by Sandy Rosenthal
- List rank#9
- Price$14.99
- Rating4.5
- Reviews144
-
GEOTECHNICAL FOUNDATION AND SOIL ENGINEERING: Soil Mechanics Foundation Systems and Ground Stability Solutions for Infrastructure Projects
by Frank Morgan
- List rank#10
- Price$12.99
- Reviews-
FAQ
Is Groundwater & Flood Control a good niche for Amazon KDP?
Its KDPTop opportunity score is 26/100, which makes it highly competitive. The median best seller has 4 reviews and sells for $67.17.
How many reviews do you need to rank in Groundwater & Flood Control?
The median best seller has 4 reviews, and 97% of them have fewer than 100.
What do Groundwater & Flood Control best sellers cost?
The median price is $67.17; half of the best sellers are priced between $27.23 and $98.71.
Can new books break into Groundwater & Flood Control?
5% of the current best sellers were released in the last 90 days.
About this data
Data comes from KDPTop's daily crawl of Amazon's public Best Sellers pages; medians use the latest list. The opportunity score (0–100, higher is easier to enter) combines the review barrier, the share of low-review books, list turnover, new-release share and price.