• Clifford Heath's Water Rocket Simulation:
  http://cjh.polyplex.org/rockets/simulation/

• Paul Grosse's water rocket simulator
  http://www.paul.grosse.is-a-geek.com/h2orckt.htm

• Dean Wheeler's water rocket simulator
  http://www.et.byu.edu/~wheeler/benchtop/sim.php

• Parachute descent calculations:
  http://my.execpc.com/~culp/rockets/descent.html
  http://web.archive.org/web/20111018045919/http://my.execpc.com/~culp/rockets/descent.html (if the above one doesn't work)

• NASA's rocket modeller simulation:
  http://exploration.grc.nasa.gov/education/rocket/rktsim.html

• Rocket Science:
  http://exploration.grc.nasa.gov/education/rocket/shortr.html

• Drag Coefficient of various shapes:
  http://www.grc.nasa.gov/WWW/K-12/airplane/shaped.html

• Terminal velocity calculations:
  http://www.grc.nasa.gov/WWW/K-12/airplane/termv.html

• Good practical information on water rockets:
  http://www.paul.grosse.is-a-geek.com/h2oRocketIndex.htm

• General information on water rockets:
  http://bradcalv.customer.netspace.net.au/wrbook.htm

• Good information on water rockets: - Dean's Benchtop
  http://www.et.byu.edu/~wheeler/benchtop/index.php

• Good links page to lots of references on model rocketry (Thanks to Ms. Valo's class for the reference)
  http://www.onlineschools.org/amateur-rocketry/

• "A Kid's Space Center - Fun With Model Rockets" (Thanks to Rachel from Ms. Ward's class in Delaware for the link)
  http://www.orlandofuntickets.com/a-kids-space-center-fun-with-model-rockets.php

• IWRA (International Water Rocket Association)
  http://www.orgsites.com/tx/icwra/index.html

• Yahoo water rocket forum (English):
   http://groups.yahoo.com/group/water-rockets/

• German water rocket forum:
   http://www.raketenmodellbau.org/forum?action=viewforum&forumid=47

• French water rocket forum:
  http://astu.cieux.free.fr/ - New forum
  ( http://techno-challenge.org/fus/index.php?sel_lang=english - old forum no longer exists )

• Italian water rocket forum:
   http://razzi-ad-acqua.forumfree.net/

• Russian water rocket forum:
  http://forums.airbase.ru/2009/04/t67067--obyknovennye-vodyanye-rakety-iz-plastikovykh-butylok.html

• Ex-USSR - Water Rocket Association:
  http://ckona.rocketworkshop.net/Ex-USSR%20WRA/Site/index.htm

These links have been added mostly in chronological order

• Hornsby Heights Water Rocket Space Agency
  http://wrocket.hampson.net.au/

• Antigravity Research:
  http://www.antigravityresearch.com/

• Kevin Wixson Water Rockets:
  http://rockets.wixsonit.com//

• Tim Sumrall: lots of good information
  http://www.sumrallworks.com/rockets/main.php3

• Washington Water Rockets:
  http://washington-water-rockets.tripod.com/

• An excellent site by Papyjo with lots of information (in French):
  http://fusees.free.fr/

• Alex's Sky Runner Rockets (Italian)
  http://skyrunner-rockets.jimdo.com/

• TDF Water rockets:
  http://tdfwaterrockets.blogspot.com/

• Damo Hart's home page:
  http://www.myspace.com/damohartrtt

• Trevor Hannam's home page:
  http://www.myspace.com/trevorhannam

• Tom Stanton's water rocket videos:
  http://www.youtube.com/user/tomstanton5

• Mike Passerotti's Water Rocket Pop!
  http://www.waterrocketpop.com/

• Nick's DotFisk water rocket blog:
  http://www.fisk.me.uk/blog/

• Clayton's water rockets
  http://h2orockets.googlepages.com/

• Water Rockets.net
  http://www.water-rockets.net/

• Team Daan & Pleun water rockets:
  http://www.freewebs.com/waterraket/

• Ruben van der Laan's water rockets:
  http://waterrocket.rubenlaan.nl/index.html

• Christoph's water rockets (German)
  www.wasser-rakete.de

• Cyril's Aero-Dom (French)
  http://www.aero-dom.fr/fus%E9e%20a%20eau/Accueil.html

• Christian Thomsen's water rockets
  http://www.c-thomsen.dk/wrockets/

• Matthew Whitehead
  http://www.wrockets.co.uk

• Dan's British Water Rockets
  http://bwrockets.blogspot.com/

• Carolina Water Rocket
  http://ch20rockets.blogspot.com/

• Doug's Escape Water Rockets
  http://sneak243.blogspot.com/

• Jeff Garcia's Ground Control Rockets
  http://www.groundcontrolrockets.com/

• Andrew's SkyFly Water Rockets
  http://skyflywaterrockets.blog.com/

• Team Lucrockets
  http://www.teamlucrockets.com

• Tom Mihelich's Delta project
  http://delta2waterrocket.blogspot.com/2011/03/welcome-to-delta-project-blog.html

• Brian's Ascender Water Rockets
  http://ascenderwaterrockets.weebly.com

• Vicente's Blog (Portugese)
  http://fogueteh2o.blogspot.com/

• Andrew and Cass's A&C Rockets
  http://www.ancrockets.com/

• Jan's JF Waterrockets (Dutch/English)
  http://www.bloggen.be/jfwaterrockets/

• Raketfued Rockets (German)
  http://www.raketfuedrockets.com/

• Zorglub's rockets (French)
  http://zorglub-fuzeao.e-monsite.com/

• Jamie B's JSB Rocketry
  http://jsbrocketry.webs.com/

Rather than duplicating lists, here are some Links to links pages:

• http://www.sumrallworks.com/rockets/main.php3?area=links&link_type=All

• http://www.paul.grosse.is-a-geek.com/h2orocketlinksi.htm

• http://polyplex.org/rockets/links.html

• NSW Rocketry Association (NSWRA)
  http://www.nswrocketry.org.au

• Forum for Australian Rocketry:
  (Australia's premier rocketry forum)
  http://www.ausrocketry.com/forum/

• Queensland Rocketry Society (QRS)
  http://www.qldrocketry.com/

• CGN Rocketry
  http://www.cgngroup.com.au/

• Melbourne Metro Rocketry Group (MMRG)
  http://members.dodo.com.au/~andnsaa/

• Richard Nakka's Experimental rocketry:
  http://www.nakka-rocketry.net

• Dick's Rocket Dungeon
  http://rocketdungeon.blogspot.com/

• Australian Rocketry
  http://australianrocketry.org/

• Suburban Rocketry
  http://www.suburbanrocketry.com/

• Sascha Grant's rockets
  http://www.oflittleinterest.com/

• Raketfued Rockets
  https://www.youtube.com/user/Raketfued

• Todd Hampson
  http://www.youtube.com/user/toddhampson

• TDF Water Rockets
  http://www.youtube.com/user/TDFwaterrockets

• Mike Passerotti
  http://www.youtube.com/user/WaterRocketeer

• Team.[D&P] Rockets*
  http://www.youtube.com/user/DaanenPleunRockets

• Daniel
  http://www.youtube.com/user/Danielastronomo

• Sascha Grant (pyro)
  http://www.youtube.com/user/krustyclown42

• Mat Gardner
  http://www.youtube.com/user/mat3279

• Antigravity Research
  http://www.youtube.com/user/antigravityresearch

• Darren's rockets (Suburban Rocketry)  (pyro)
  http://www.youtube.com/user/69RocketBones

• 05elchico05 (French)
  http://www.youtube.com/user/05elchico05

• Christian's water rockets
  http://www.youtube.com/user/chriswaterrockets

• Illauerli
  http://www.youtube.com/user/Illauerli

• Dave's rockets
  http://www.youtube.com/user/daWRocket

• Paul Breed (big pyro stuff)
  http://www.youtube.com/user/PaulBreed

• David's rockets (pyro)
  http://www.youtube.com/user/dc54321x

• Pat's water rockets
  http://www.youtube.com/user/digidrink

• Dutch Water rockets
  http://www.youtube.com/user/dutchwaterrocket

• Gotta Launch
  http://www.youtube.com/user/GottaLaunch

• kfmh06
  http://www.youtube.com/user/kfmh06

• Water Rocket Achievement World Record Association
  http://www.youtube.com/user/WRA2

• MrBasso94
  http://www.youtube.com/user/MrBasso94

• Soren's water rockets
  http://www.youtube.com/user/skuula

• TBrockets
  http://www.youtube.com/user/TBrockets

• Teamdbrockets
  http://www.youtube.com/user/Teamdbrockets

• The Rocket Boyzz
  http://www.youtube.com/user/therocketboyzz

• The sky dart team
  http://www.youtube.com/user/theskydartteam

• Thunder Rockets
  http://www.youtube.com/user/thunderrockets

• TwoOnnies
  http://www.youtube.com/user/TwoOnnies

• Matthew Whitehead
  http://www.youtube.com/user/wrockets

• Papyjo (French)
  http://www.youtube.com/user/fuzeao?feature=watch

• Zorglub (French)
  http://www.youtube.com/user/94zorglub

• JSB Rocketry
  https://www.youtube.com/channel/UCczlD-uBjlYdJyBFEfuCEbg

• GipsyDanger HD
  https://www.youtube.com/channel/UCNmiwm87xEVW4V_yKSV02bA

• Great website for help with getting a business on line: Websites for small business.

• Really good custom made jewellery: Amanda's Jewellery.

• These guys rock! I am a huge fan: Armadillo Aerospace. DIY manned space flight.

• Paul Breed's - Unreasonable Rocket, more DIY spaceflight.