Temperature Monitoring Run No. 1 August 3 (~3:45 PM) - August 25 (~1:33 PM), 1999
	Probe 1 Waiahole Stream	Probe 2 Waianu Stream	Probe 3 NOT USED
Sampling Rate (First Measurement)	every 15-min (3:48 PM)	every 15-min (3:49 PM)
No. of measurements	2104	2104
Temperature Average	20.4oC	22.5oC
Temperature Minimum	19.7 oC	21.0 oC
Temperature Maximum	21.2 oC	24.7 oC

After three weeks of recording temperature, differences are readily apparent between Waiahole with substantially restored water flow and Waianu with a smaller volume of restored flow. Water temperature in Waiahole Stream varies hardly at all (just over 1 C^o) between day and night and the water is cooler than the water flowing in Waianu. For any given pair of measurements collected at the same time, the water in Waianu was anywhere between 1.0 and 3.8 C^o above the temperature in Waiahole Stream. The average of these paired differences is 2.1 ^oC. A graph of the results from Run No. 1 is posted. The graph shows the daily rise and fall of the temperature in each stream. Generally, the lowest temperature each day occurs between 6:00 and 8:00 AM; the highest temperature between 3:00 and 4:00 PM.

Run No. 2

Our second temperature run compares Waiahole Stream (at Station 2) with nearby Waikane Stream. Flows in these two streams at this time of year are substantially different. The results from monitoring between August 25 and November 16, 1999 are summarized in the following table:

Temperature Monitoring Run No. 2 August 25 (~14:20) -- November 16 (~12:00)
	Probe 1 Waiahole Stream	Probe 2 NOT USED	Probe 3 Waikane Stream
Sampling Rate (First Measurement)	every 15-min (2:20 PM)		every 15-min (2:23 PM)
No. of measurements	7781		7960
Temperature Average	20.2oC		22.8oC
Temperature Minimum	19.5oC		20.8oC
Temperature Maximum	21.2oC		24.3oC

It is clear that water in Waikane Stream is warmer and more variable between day and night than water in Waiahole Stream. Waikane temperature profile is similar to that of Waianu Stream, yet slightly warmer and less variable that Waianu. The monitoring location on Waikane is near Kamehameha Highway, at a lower elevation than the measurements made to date on either Waiahole or Waianu streams.

Run No. 3

On September 3, probe No. 2 was deployed at Station 001 in Waiahole Stream. This location is just above the Mauka lo`i intake and not expected to differ substantially from Station 002. However, Station 001 is a better location for long-term baseline monitoring in Waiahole Stream. The Optic Stowaway at Station 002 is still recording, to permit comparison between Stations 001 and 002 during our monitoring Run No. 3.

Temperature Monitoring Run No. 3 September 3 (~15:00) -- November 14 (~15:15)
	Probe 1 Waiahole Stream Sta. 002	Probe 2 Waiahole Stream Sta. 001	Probe 3 Waikane Stream see Run No. 2
Sampling Rate (First Measurement)	every 15-min (2:19 PM)	every 15-min (2:15 PM)
No. of measurements	6916	6917
Temperature Average	19.96oC	20.16oC
Temperature Minimum	19.5oC	19.3oC
Temperature Maximum	21.2oC	20.8oC

Over this ten week period of recording temperatures a very slight difference can be seen to exist between Station 001 located just above the mauka lo`i and Station 002 in Waiahole Stream below the lo`i return water. Temperature, on average, is 0.2 C^o cooler at Station 001. This is, of course, a miniscule difference, but demonstrates the analytical power of using a continuous sampling/recording device for temperature measurements. Temperature was slightly less variable at Station 001 (ranging over only 1.5 C^o) during this period than at Station 002 (1.7 C^o; see Table 1 above). Upon completion of this run, Station 001 will become the long-term monitoring location for Waiahole Stream.

Run No. 4

A recording probe was placed in Waianu Stream near the auwai diversion -- that is, upstream of the (Reppun) lo`i -- on November 8, 1999. This location is designated Waianu Station 001.